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Resistance and Multimeters

March 12, 2025  •  EPISODE 256

How do we measure electricity? In this episode of Science LIVE, Roger Billings shows how multimeters work to measure voltage, resistance, and ohms. Learn why these tools are important and how they’re used in everyday technology.

About DrB

Dr. Roger Billings is a visionary innovator whose work has touched the lives of millions of students and transformed the landscape of education. Widely known as “DrB” to the countless kids who benefit from his groundbreaking Acellus learning system, Dr. Billings has dedicated his life to advancing education through technology. As part of DrB’s lifelong commitment to supporting education, Science LIVE was launched as a way to “give back” by mentoring students in conjunction with the Roger Billings Scholarship Program.


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About the Roger Billings Scholarship Program »

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305 Comments

  1. Alana Boyce

    I wasnt aware you could measure electricity! Thats so interesting.

    Reply
  2. Deion S

    I enjoy learning about electricity!!

    Reply
  3. Maya J

    Technology is so amazing!

    Reply
  4. Valentino Batson

    Learning about electricity is the coolest! Thanks

    Reply
  5. Claire Bradford

    I learned a lot today

    Reply
  6. Bridgette Opsahl

    These videos are so inspiring

    Reply
  7. Ethan

    What are some mistakes to avoid when measuring electricity?

    Reply
  8. Nola

    I love the science live always helps me learn something new!

    Reply
  9. Kayla Ferguson

    Electricity is so interesting!

    Reply
  10. Lily Ferguson

    The Pajet cardboard cutout makes me laugh!

    Reply
  11. Caleb Felker

    I always love Science Live! I have learned so much. Great video!

    Reply
  12. Grace Goddard

    Loved learning about electricty and currents! Learned a lot. Thank you!

    Reply
  13. Rivers Blackmon

    I learned a lot about electricity in this video. Also, way to go Charlie!

    Reply
  14. Arik Partridge

    R-51 is so funny!🤣 I love these videos!

    Reply
  15. Kadyn Dimmitt-Henslee

    Resistance and Multimeters – My mom said she learned more from this video than she did in school about electricity and currents. My mom is your biggest fan.

    Reply
  16. Kayla

    REDDDDDDD PLEASEEEE
    🥰

    Reply
  17. Victoria Jimenez

    Thank you! learned a lot

    Reply
  18. Isaac Becraft

    My Dad was just using a multimeter the other day when he was working on the house.

    Reply
  19. Ryder Blais

    It’s crazy the amount of electricity humans can produce so far yet, we’re at only a fraction of the power a lightning bolt makes with normal appliances.

    Reply
  20. Zandie Ortiz

    I did not know you could measure electricity, super cool!

    Reply
  21. Gunnar Bendorf

    Love it 😁

    Reply
  22. Jezlyn Chavez

    I learned a lot watching this video.

    Reply
  23. Elisiyana Louis

    The fact that electricity can be measured opens up endless possibilities of scientific research! The lengths we can reach through science are truly astonishing.

    Reply
  24. Logan Rentner

    These videos are the best!

    Reply
  25. Kamilah Bello

    I really enjoyed Tobias’ talk regarding Douglas Engelbert and the invention of the original mouse. Who knew how important the mouse would become for computer technology

    Reply
  26. Riley States

    R-51 is awesome! And I wish I had a multimeter

    Reply
  27. Llondon Bates

    “Resistor” HELP!! XDDD

    Reply
  28. Ana Maria Chaves

    Hi! I watched this live from North Carolina. I really enjoyed the live! I absolutely love how everything is about science and also loved learning more ab measuring electricity, etc. Thank you!!

    Reply
  29. Angie

    love learning something new everyday!

    Reply
  30. Teagan Oliver

    Love to have that book

    Reply
  31. Alexander Bryan

    Where do you think computers will be in the next 25 years?

    Reply
  32. Uzair Martinez

    I never knew you could measure electricity!

    Reply
  33. ashton

    I love r-51!!

    Reply
  34. timothy conklin

    Thank you!

    Reply
  35. Sara Francis

    Love new information and I really dislike the change of daylight saving time.

    Reply
  36. Kapri

    Nice! Learning about measuring electricity was pretty interesting.

    Reply
  37. brianna stilwell

    Measuring electricity is awesome!

    Reply
  38. Vivienne Robillard

    This is so neat!!

    Reply
  39. Becker James Eisele

    I liked r-51 a lot!

    Reply
  40. Cassidy Arnett

    R-51 is goofy

    Reply
  41. Alejandro Price

    Yes please put mutimeters on the store in a black and gray color

    Reply
  42. Sophie Nelson

    I didn’t even know measuring electricity was a thing thank you!

    Reply
  43. Alejandro Price

    Can we get a book like that??

    Reply
  44. Caiden Hiner

    so cool loved learning about Resistance and Multimeters

    Reply
  45. Tyler Whitsel

    Amazing live as usual

    Reply
  46. Nakova Crocker

    Thank you!!

    Reply
  47. Angelina

    This is so cool! Also that end bit was really meaningful

    Reply
  48. nathaniel thompson

    ha so funny. I love R-51

    Reply
  49. mackenzie

    I love how multimeters work

    Reply
  50. Jadrian Mayo

    I really liked learning how to measure electricity. I learned something new.

    Reply
  51. Brayden

    I love R-51

    Reply
  52. Jasmin Sosa

    I love how the original mouse actually looked a lot more like a mouse!

    Reply
  53. Callen

    Learning about how to measure electricity is really cool!

    Reply
  54. Aden Moore

    This was a great episode! I do think y’all should include a multimeter in the store, it seems like it’d be fun to play around with.

    Reply
  55. lillian

    I love the store! thank you for making it!

    Reply
  56. Mariah Tyus

    R-51 is so funny!

    Reply
  57. sage

    I love a pink mulitmeter in gold store

    Reply
  58. Titus Russom

    I had a multimeter I only used it for alternating current.
    Thank you for educating me on the many uses of the multimeter and resisters.

    Reply
  59. Aixa R

    Whats you guys favorite school subject? (Besides science)

    Reply
  60. sage

    I LOVE YOU DR ROGER BILLING

    Reply
  61. Kinsey Spradlin

    It was very cool to hear about 4 new planets circling Barnard’s star, how big are they?

    Reply
  62. Alexander Treat

    Thankful for Acellus and being able to learn about technology

    Reply
  63. mimi

    I would love to see pink mulitmeters in the gold store. I love Todd Edmond and would love to see him in more courses! I love science live!

    Reply
  64. Gia

    I love how the mouse was invented.

    Reply
  65. Barrett Pirtle

    Learning about Ohm’s Law and how electricity works is so interesting

    Reply
  66. Charlotte

    multimeters are fascinating!!!

    Reply
  67. Leah

    I really enjoyed learning how to measure electricity!

    Reply
  68. Emerale Stephens

    Did Elon Musk get the name Tesla after the guy named Tesla?

    Reply
  69. Renee tarantelli

    Love learning about electricity

    Reply
  70. Bethel Tobias Ivester

    Wow this episode was great

    Reply
  71. Sebastian

    Always love breakthrough moments in science

    Reply
  72. Noah Soucie

    THIS IS SO COOL

    Reply
  73. eva

    I’m so thankful for Acellus:)

    Reply
  74. Memphis Moore

    One of my favorite videos yet! thank you for sharing this.

    Reply
  75. Luciano

    I was diagnosed with ADHD.
    I really don’t like to sit still. This school helps me not have to sit down for very long. And I like school now. This will be my third week at Acellus.

    Reply
  76. Justin Estevez

    Dr. B is such a great salesman. He made that multimeter sound like the most fun thing of all; And yes I think you guys should put some In the Acellus Store maybe in blue.

    Reply
  77. Simone tarantelli

    I love the ai bit 😂

    Reply
  78. Persephone Davis

    With one questions I have I was wondering if there would be more in depth videos further explaining it . For example what factors would be needed to cause the resistance in the conductor.

    Reply
  79. Atticus W

    My dad uses multimeters in his work

    Reply
  80. Kennedy

    I did not understand how voltage was measured before, great Science Live

    Reply
  81. Kailey Holman

    This is good information to have because almost everything has batteries now.

    Reply
  82. Jackson Judiscak

    Tobias has always been an awesome segment but this one was super interesting.

    Reply
  83. Libby

    I couldn’t imagine having to use arrow keys to move around my cursor so glad we have computer mice

    Reply
  84. Zachery Johnson

    Wow this science live was very informative and i really enjoyed it!

    Reply
  85. Sophia

    Woah, I didn’t know we could measure electricity!

    Reply
  86. Robert Doyle

    Electricity Is really cool!

    Reply
  87. Tshepiso Makwela

    Cool video.

    Reply
  88. Armaan Shah

    where do you find muscle wire?

    Reply
  89. ella spence

    I love Science Live videos!

    Reply
  90. Madilynn J

    Thankful for the video lives

    Reply
  91. Myckael J

    Thank you Dr. Roger Billings for this program.

    Reply
  92. Merle J

    Love Science Live

    Reply
  93. Yurieva J

    Love Acellus

    Reply
  94. Ariana Mauldin

    Jingle bells was funny

    Reply
  95. Nicole Brennan

    Are multimeters able to detect electromagnetic fields from a light installation?

    Reply
  96. Bridger bellavia (*Vinny*)

    This is literally my favorite episode of science life. I’m hopefully going to be an electrician someday!!⚡️⚡️

    Reply
  97. Jackson M.

    I would like to have a red one in the store. This was a great video!

    Reply
  98. Deanna Thompson

    Yes, please put the multimeters in the Gold Store – purple or red

    Reply
  99. Taven Oluwa

    Acellus is the best!

    Reply
  100. Jayden Huse

    Thank you for this Episode of Science live, Second week on Acellus so far!

    Reply
  101. Sarah

    Watching from connecticut

    Reply
  102. Raylan Springstead

    We love acellus, My son har soared with his learning skills since joining.

    Reply
  103. Taymiyyah SuTay

    Wow! i really liked this one! so interesting!

    Reply
  104. Jayden Bowles

    I’ve always wondered how electricity works, and I do now.

    Reply
  105. Anthony Naqvi

    Nice watch Dr.B!

    Reply
  106. Wencai Mckillop

    That is amazing, i love watching science live, Roger billing and Pajet are remarkble when they are together

    Reply
  107. Preston Hagan

    this one was quite mind boggling!

    Reply
  108. Leif

    Pretty cool

    Reply
  109. kera m osborne

    Can you put a purple multimeter in the store.

    Reply
  110. Russell Ellis

    Do they know why some resistors are more tolerant than others?

    Reply
  111. Jacob Lott

    i wonder what the most amount of voltage ever pushed through any given conductor was.

    Reply
  112. Katie Miller

    what factors affect the resistance of a conductor?

    Reply
  113. Ruth Baldwin

    I really loved this one!

    Reply
  114. Cole Melerine

    I have to use a mouse with my computer. I cant imagine it any other way.

    Reply
  115. Jessica Romero

    This is so amazing!

    Reply
  116. Taylor Crosby

    I want my own star now

    Reply
  117. bentley sparks

    why should you make sure the circuit is powered off?

    Reply
  118. Jayden

    I love science live q(≧▽≦q)

    Reply
  119. David Leick

    i love acellus [:

    Reply
  120. Lincoln Stephens

    I wish I could be there and see how science live do it.

    Reply
  121. Liam

    I love watching science live!

    Reply
  122. Muhaimin Khattak

    this Wednesday was one of my favorites :}

    Reply
  123. Asher Bhatti

    I like the live videos.we can learned a lot .My son like these videos and how they explained with experiments when he heard those videos afterwards he likes science and he told me that mom now I want to become a scientist .He loves to doing experiments a different things .✌

    Reply
  124. Jason Sparks

    What is a multimeter?

    Reply
  125. Ashlyn Rider

    Wow! I had no clue that that’s house mice for computers came to be.

    Reply
  126. Gabe

    Love Acellus

    Reply
  127. Zaid Abdul

    It was pretty fun with DR. Roger Billings

    Reply
  128. Brianna Garcia

    Acellus has really help me, and other friends and family! This school helps many people, including me! The fact that this community is willing to help any and all kids like me! Keep up what you’re doing Acellus!! Thank you!! Congrats to Charile!!

    Reply
  129. Payton Alvey

    I love daylight savings time! Lighter longer

    Reply
  130. Jaecarrius johnson

    this is awesome!!!!!!

    Reply
  131. Keren Rosen

    Cool episode!

    Reply
  132. Zane Ford

    This was super cool

    Reply
  133. Abraham Cutler

    That’s cool!!!!!!!!!

    Reply
  134. Tyler Faircloth

    lol this is so funny im 10 and love the part where you say nope that is my watch lol I love science live

    Reply
  135. brianna stilwell

    Love loved this!

    Reply
  136. Adria Samu

    I think electricity is very interesting.

    Reply
  137. Dustin Thrasher

    I found it interesting that the muscle wire reforms back to its original position when heated up.

    Reply
  138. Lane Ellis

    I can’t imagine having to use the arrow keys to control my cursor. We are lucky to have people willing to innovate.

    Reply
  139. Dillen

    I wish I could go to science live

    Reply
  140. Dean hammond

    I love science live I hope a new one is come in 10 days(づ。◕‿‿◕。)づ

    Reply
  141. Deion S

    I love learning science!

    Reply
  142. Evelyn Yenchko

    This was so cool!

    Reply
  143. Alina Orozco

    This is so amazing!!

    Reply
  144. Jordan Campbell

    So each piece of memory wire can only remember one memory. So how many would it take to move like a person?

    Reply
  145. Aviles Ramirez

    I liked the live demo of meters and resistors! It was cool to learn more about what volts truly measure: How hard the electricity is pushing through it’s current.

    Reply
  146. Allegra Geter

    Very interesting! I liked learning about resistance.

    Reply
  147. Hannah Soye

    This was really cool!

    Reply
  148. Samil Nelson

    Love all the opportunities to learn from someone who knows their stuff !!

    Reply
  149. Dalton mccawley

    I heard you can pay to have a star named after you

    Reply
  150. Makayla Puig

    Measuring energy is a very cool

    Reply
  151. Kiana

    I had no idea that the mouse used to be wood.

    Reply
  152. Megan Hawkins

    I had no idea that is how the mouse was made! Amazing!

    Reply
  153. Nikolai Cornwell

    My Dad has one.

    Reply
  154. Tenley cordry

    I love this program and all the learning opportunities!

    Reply
  155. Anthony Pulido

    I love watching science live!

    Reply
  156. Aaron

    What’s your favorite subject in science

    Reply
  157. Arianna Graham

    I found it interesting how if heated up, the muscle wire goes back to he state it remembers.

    Reply
  158. Sugar Lauren Freeman

    Hello my name is Sugar Lauren Freeman,
    I would like meterader in purple please and can you teach me how to make a robot I love science

    Reply
  159. Dennis Flores

    Really enjoyed learning about resistance and everything else y’all talked about. Thank you!

    Reply
  160. Mackay Richardson

    I think that you should do Acellus golden colored multimeaders

    Reply
  161. Yochanan Harris

    YESSS!!!!! I WANT A MULTI METER IN THE GOLD STORE!!!

    Reply
  162. charlie

    you guys make learning entertaining thank you

    Reply
  163. Grace Robinson

    I love this science live video !

    Reply
  164. Jason Sparks

    What are transmitters?

    Reply
  165. Breelyn Hudson

    The evolution of the mouse was so cool .

    Reply
  166. Alina

    ❤‍🔥

    Reply
  167. Alina

    I wish I could go to science live so bad

    Reply
  168. Jayden Batista

    Thanks for this lesson on measuring electricity. Multimeters are such useful tools for checking voltage, resistance, and current in everyday devices.

    Reply
  169. Noah Henson

    Electricity is so cool

    Reply
  170. Skyeler Barfield

    I never thought about how life was like using a computer with no mouse!!

    Reply
  171. Anassa Nomura

    How do you build a robot?

    Reply
  172. Sloan Hale

    Acting and Filmmaking courses would be amazing!

    Reply
  173. Liam Howard

    yes, I think a multimeter would definitely be a good addition to the Acellus Store, and it should be in the Acellus blue.

    Reply
  174. Layten

    I have been doing Acellus for 3 years and I started in four grade now I’m in 7 it is the best school I have ever done I really love this school it has helped me so much I don’t have many friends on here but that is fine but, I love science live it is so cool.

    Reply
  175. Journi Powers

    I enjoy learning about electricity. My parents just bought us a new home and my dad talks about it a lot and how the lights work in the house.

    Reply
  176. Bako and Deko

    Wow I wish I could go to science live!!

    Reply
  177. Zoey White

    How does energy transfer to battery’s?

    Reply
  178. Gabe Houchin

    Love how he starts every episode keeps them fun and entertaining.

    Reply
  179. Auastynn Brash

    I think it’s so cool that this program has come so far but you’re still looking for suggestions thank you

    Reply
  180. Asher Levi Puska

    Hello Dr. Billings! I wanted to say that I believe your program, Acellus, is the best school program I have attended! I would also like to say that, and I’m sure everyone in these comment sections can agree, we all love you Science LIVE Videos. Your videos always are interesting, fun, and always entertaining!
    I also wanted to congratulate Charlie, he seems to be working hard, and his work has paid off!
    I also want to thank my AMAZING classmates for helping push me to do well and me to push them. I can’t name them all, but I can thank a few of them here.
    Thank you
    Nakova C.
    Luis Daneil P.
    Raya H. (Who always wins the weekly leaderboard, great job)
    and the other classmates I didn’t name but thank y’all. When you said to send feedback about ways to improve Acellus, I started to think. Of course I couldn’t say anything about the school work(which is amazing btw) but maybe about our profiles! I was thinking that maybe y’all could add background music. Which would be pretty cool. Or maybe class groups, that are monitored by Acellus Staff.
    Thank you all for your dedication to Acellus and us, the students.
    Thank you Dr. Rodger Billings!!

    Reply
  181. Preston Stewart

    I love that this teaches me about tools that measure electricity.

    Reply
  182. Azylynn p

    I love this keep it up.

    Reply
  183. Han Nguyen

    I REALLY love watching SCIENCE LIVE !!!

    Reply
  184. Martyn Swanepoel

    Multi meters is very fascinating. I would like a Science LIVE video
    explaining how to calculate the resistance using the colours painted
    on the resistor and what each line represent. It is quite interesting.

    Now I understand why multi meters is called Multi Meters!
    They have multi functionalities

    Reply
  185. Jaxon Rea

    How many mouses did Steve job create until he made the perfect one?

    Reply
  186. Noah Lair

    My favorite part was when Mr. Billings showed how a resister worked.

    Reply
  187. Logan

    I did some electrical work with resistors, but I have learned the most from this video

    Reply
  188. Nathan Davis

    Love these videos they’re so fun!

    Reply
  189. vivienne

    i LOVE how these videos are formatted to be entertaining yet informative at the same time. learning about electricity is so cool!!

    Reply
  190. Simone tarantelli

    That so cool!

    Reply
  191. Caleb Perzhu

    Thank you for explanation about Voltage

    Reply
  192. Quintero Cartwright

    I did not now that scientists have new discovery that there are four tiny planets circling the Bin Heart star.
    Also, I love how Acellus Academy caters to various learners where students can work at their own paste.

    Reply
  193. Mason M

    I love watching these videos.

    Reply
  194. Miecqe Cronjé

    I love watching science live! Always very interesting

    Reply
  195. Ambellina Colpitts

    It was interesting to learn about the creation of the mouse and its uses. Thank you for another great science live!

    Reply
  196. Abigail McGrath

    Daylight savings is cool but weird

    Reply
  197. Edan Langston

    My daddy is an electrician and he has a lot of electric guys that work with him.

    Reply
  198. Yaretzi garcia

    I love science

    Reply
  199. the roberts kids

    we love the lives

    Reply
  200. Sean Loftus

    Thank you for making science live!

    Reply
  201. McKenna Kuiper

    Day light savings has been such a fun topic to learn about! Really enjoyed this video

    Reply
  202. Makayla Sampson

    These are so cool to watch

    Reply
  203. Yanella Alequin

    Daylight savings…I don’t like it when we lose one hour

    Reply
  204. Trevor Fishack

    its amazing how electricity works

    Reply
  205. Benson Ryker

    I LOVE THIS AND MYSELF AND DAD ARE GOING TO DO SOME SCIENCE IN THE GARAGE.

    Reply
  206. Abigail Vela

    R51 is so funny!

    Reply
  207. Corwyn Zirpoli

    Rly fun to watch

    Reply
  208. Braylon Morris

    I love Acellus!

    Reply
  209. suraiea

    awesome lesson! <3

    Reply
  210. Kendallyn Rose

    Knowing Ohm’s Law while watching this science live really helps.

    Reply
  211. Caiden Hiner

    love this so cool

    Reply
  212. Skyler roston

    What is the highest voltage for a home appliance?

    Reply
  213. Michael Myrick

    I found it interesting about the measurement volts of electricity or resistance in the video.

    Reply
  214. Cody Krause

    This was great.

    Reply
  215. bailey fletcher

    Love watching these!

    Reply
  216. Spencer McKeon

    I loved this, science live is my favorite.

    Reply
  217. Chase

    How long did it take to make acellus?

    Reply
  218. ryanna edenfield

    daylight savings time is so cool but weird

    Reply
  219. Grace Church

    My favorite teacher is Mark Rogers! He helped me so much in math with fractions!

    Reply
  220. BayLeigh Howland

    This episode provided a clear and insightful explanation of how multimeters function and their crucial role in electrical measurements. The practical demonstrations made complex concepts accessible.

    Reply
  221. Elias Barretto

    Muscle wire is so cool! I would love to become a scientist or engineer and create something innovative.

    Reply
  222. DPreston

    We are so excited for Charlie! What an achievement!

    Is the accuator expensive? Will everyone use the muscle wire now?
    .
    Dr. Tobias is so funny! It’s cool to see how far we’ve come with every phase of the computer- the story of the mouse is wild. Just how they demonstrated it for the engineers was ahead of it’s time really.

    The multimeter cables is a little like jumping a car. I’d like to have a blue or green multimeter. That would be cool!

    Reply
  223. Tobias Dingus

    cool

    Reply
  224. Leilah Peterson

    Congratulations Charlie!

    Reply
  225. Jeremiah Wade

    It was so awesome to learn how the mouse was invented and reinvented!

    Reply
  226. Prince McGriff

    Always assume the power is on guys 🙂

    Reply
  227. Kylieeeeeeee

    I lovvvveeee Science Live, I watch it in the car!

    Reply
  228. leeland whitehouse

    this is so cool the way eletricity works

    Reply
  229. river whitehouse

    really enjoyed this

    Reply
  230. Isabella baldino

    we don’t have daylight saving in hawaii

    Reply
  231. Tristan Gore

    Happy to be on Science Live!

    Reply
  232. Deanna

    The story at the end was so sweet! This was so interesting though!

    Reply
  233. Aaron madura

    We just used a multimeter last week to fix our refridgerator!

    Reply
  234. gavin Munro

    Daylight savings messes me up

    Reply
  235. Varvara Erofeeva

    I enjoyed it, thank YOU so much!

    Reply
  236. Damien Daniels

    I love robots too!

    Reply
  237. Jakiha Collins

    Happy to be on Science Live!

    Reply
  238. Zander Stephens

    Daylight Savings Time messes me up.

    Reply
  239. Shane Bowles

    I enjoy these videos. They get me excited about science.

    Reply
  240. Katya

    This was a fun watch! The Christopher story was as sweet as chocolate.

    Reply
  241. Violet Sophia Cumming

    Its so great hearing about the evolution of technology.
    and its kind of crazy to think that computers took up whole rooms at one point.. And now how small they’ve become.

    Reply
  242. kaitlyn hatcher

    i loved this episode! Learning the way the mouse is made was incredibly interesting.

    Reply
  243. Tate Pierce

    Hooray for Charlie!

    If you send a million volts through a smaller resister, why doesn’t it blow out the resister?

    Reply
  244. Andrea Cervantes

    This was so fun to watch and learn!

    Reply
  245. Max McCall

    How hot does the wire have to be for it to stop reforming

    Reply
  246. Jahmir baxter

    Great video Dr.john gave a great presentation on explaining how the robotic arm works

    Reply
  247. Logan Gilmore

    Its always interesting how resistance works

    Reply
  248. Arianna Castillo

    so happy in in this program!

    Reply
  249. Croix Long

    I loved how dr. John explained how the extremely high tech robot arm worked.

    Reply
  250. Sophia Benson

    Wow! Muscle Wire is awesome!🤩

    Reply
  251. Gage Hasselmann

    Please hurry on the filming course I want to do it before I am done with school

    Reply
  252. Aidan

    I never thought about how complex just a mouse is.

    Reply
  253. Gracelyn Weitz

    wow never knew resistance could be so cool

    Reply
  254. aaisha

    I love your videos DR.Roger Billings

    Reply
  255. Bryce Hoffman

    These videos are so encouraging.

    Reply
  256. 𝑚𝑎𝑦𝑧𝑖 ౨ৎ

    electricity is so cool!! ❤︎︎

    Reply
  257. Blythe

    So, you said it can take on jobs people don’t enjoy or can’t do…. What about dirty jobs?

    Reply
  258. Teagan Parkinson

    I love that this teaches me about the tools that measure electricity.

    Reply
  259. Audrina Aaron

    so many things go into having electricity, it’s so fun to learn about it!

    Reply
  260. Libby

    Haha R-51 is so funny!

    Reply
  261. Bre'Shaun J Bailey-Amos

    Fascinating information about the mouse! Thanks Acellus!

    Reply
  262. Tommie Hendrix

    I had no idea that NASA was involved in the development of the mouse.

    Reply
  263. Asher Levi Puska

    Hello Dr. Billings! I wanted to say that I believe your program, Acellus, is the best school program I have attended! I would also like to say that, and I’m sure everyone in these comment sections can agree, we all love you Science LIVE Videos. Your videos always are interesting, fun, and always entertaining!
    I also wanted to congratulate Charlie, he seems to be working hard, and his work has paid off!
    I also want to thank my AMAZING classmates for helping push me to do well and me to push them. I can’t name them all, but I can thank a few of them here.
    Thank you
    Nakova C.
    Luis Daneil P.
    Raya H. (Who always wins the weekly leaderboard, great job)
    and the other classmates I didn’t name but thank y’all. When you said to send feedback about ways to improve Acellus, I started to think. Of course I couldn’t say anything about the school work(which is amazing btw) but maybe about our profiles! I was thinking that maybe y’all could add background music. Which would be pretty cool. Or maybe class groups, that are monitored by Acellus Staff.
    Other than that, I am very much enjoying math at the moment with Dr. Aaron Brown my favorite teacher of whom I would like to meet one day.
    Thank you all for your dedication to Acellus and us, the students.
    Thank you Dr. Rodger Billings!!

    Reply
  264. Brayden Bauer

    I love learning about electricity it has always been so Interesting to me

    Reply
  265. Joey W

    Learning about the meter was interesting because you use that at home for things. It was especially interesting about keeping a hand behind your back to prevent electricity going through your heart.

    Reply
  266. Pacin Asawathaworn

    I agree that using mouse helps the interaction to computer is easier, cannot imagine how people in older times work with computer.

    Reply
  267. Jahan Kendrick

    My dad showed me the multimeter. It is very cool.

    Reply
  268. Ambroise Dulauroy

    It’s very interesting because we use electricity in everything today: our computer, our phone, our TV, everything we have in the house.

    Reply
  269. Trystin Thompson

    I love learning about electricity and how it all works

    Reply
  270. Coralynn Puska

    I belive Nasa has been around for about maybe 64- 65 years. Also I don’t think R 51 needs a resistor for Pajet Monet!

    Reply
  271. Abigail Welenc

    I have always wondered what those transformer boxes were, theres a few randomly around the neighborhood.

    Reply
  272. Alexa Trosky

    Yes, I would love to be able to purchase a meter on the Gold Store. I really enjoyed watching all the things you could do with it and find out. I am excited to explore and find out about volts and current in batteries and light bulbs and many different items. Thank you!

    Reply
  273. Jocelyn Perez

    I enjoyed this video about resistance and multimeters!

    Reply
  274. Ava Pinco

    So many things play into resistance and how it works.

    Reply
  275. Dean Dunaway

    This was a super interesting episode cause I love electricity, Thankyou DR,B

    Reply
  276. minerva

    I love learning about electricity!

    Reply
  277. Thailand

    Dr. Billings explained how resistance controls the flow of electricity in a circuit. It is measured in ohms (Ω) using a multimeter, a handy tool that checks voltage, current, and resistance in electrical circuits. He demonstrated how to use a multimeter to measure volts and test different components like resistors, which help regulate electrical flow.

    He also talked about Nikola Tesla, the pioneer of alternating current (AC), which powers our homes and cities today. Unlike direct current (DC), AC allows electricity to travel long distances efficiently. Understanding these concepts helps us appreciate how electricity powers our world.

    Reply
  278. Athena Byrne

    What is the memory wire made of?

    Reply
  279. Abigail Mitzel

    Acellus makes learning fun and interesting

    Reply
  280. Maya Wossne

    How long has NASA been around?

    Reply
  281. Jessica Brück

    I have used Multimeters with my dad a few times. Now I know exactly what it is and all the settings. I also found the history of the mouse quite interesting. Thank you

    Reply
  282. Brielle W.

    I had no idea the mouse was made that way, cool!

    Reply
  283. carlee mashek

    Electricity is my favorite science study!

    Reply
  284. Melody Quinones

    PINK!!!!!!!

    Reply
  285. Ambellina Colpitts

    The memory wire that Dr.John was talking about was so cool. This science live has made me more interested in computer science. I’m excited to check it out.

    Reply
  286. Emillia Giles

    We are watching together with my grandmother.

    Reply
  287. Zoey Garcia

    I never realized you can measure electricity.

    Reply
  288. Lillian Barkan

    Thank you for teaching me all of the science that you know to make me smarter.

    Reply
  289. Joshua Webb

    I’d like green multi meters!
    It’s amazing how the# of wires wrapping around can change how much energy goes through.

    Reply
  290. Tristan Davis

    Wow interesting that’s how electricity it measured!

    Reply
  291. Karlee Urbaschek

    My grandfather was an electrician his whole life. I really liked this video and if you can get the multimeter in would like to get one. Parents said would get. Pink or blue would be my favorite color choices! My great grandfather worked for the city and worked on electrician lines, he had got electricuted real bad many years ago when working on a power line, my mom and grandma told me and luckily lived but was burned severely. Thank you for the great topic!

    Reply
  292. Savannah Brennan

    I love the comparison between muscle wire and a plant growing! I also love the different phases of it, but it does sounds like you have to be aware of the right amount of heat to use in order to get the contract action. Thanks for this week’s live!

    Reply
  293. Carson Taylor

    My great grandfather has a star named after him

    Reply
  294. Adalyn Zink

    I loved learning about the multimeters and memory wire. Is there some where I can get memory wire to experiment with?

    Reply
  295. Rayana Wulf-Towne

    Is there a limit to how many times you can form and reform muscle wire before it breaks or stops reforming to it’s original position?

    Reply
  296. Declan Hart

    I loved hearing the history of the mouse.

    Reply
  297. Eldrin Fletcher

    Why did the mouse had 3 buttons?

    Reply
  298. Nei Rivera

    Why is day light savings a thing?

    Reply
  299. Asher Rice

    Great video on multimeters!

    Reply
  300. Eva Sirotek

    I didn’t know that multimeters had many different functions!

    Reply
  301. Maddie

    Wow that’s pretty cool I didn’t know there was a way to “measure” electricity

    Reply
  302. Jackson B.

    It is awesome how useful multimeters are in finding problems in circuits.

    Reply
  303. Ellie

    Great job Charlie!

    Reply
  304. Genevieve Melody

    I loved this! Thanks so much!

    Reply
  305. Lucy Rose

    They do not do daylight savings where i live in Puerto Rico!

    Reply

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