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
Read more about DrB »
About the Roger Billings Scholarship Program »
Follow
Recent Episodes
258. My Greatest Invention: FSD
What is Roger Billings’ greatest invention? In this episode of ScienceLIVE, he shares the story behind FSD—an innovation that has profoundly impacted technology, the internet, and the way our world stays connected. Learn how it was developed, the challenges faced along the way, and why it stands out among his many pioneering achievements.
257. The Computer That Changed the World
How did one computer revolutionize technology as we know it? In this episode of Science LIVE, Roger Billings shares the story of a groundbreaking invention that changed the future of computing. Discover how early computers evolved and how Dr. Billings predicted the end of mainframes—an idea many doubted. But he proved them wrong by creating the first all-in-one personal computer, shaping the way we use technology today!
255. Ohm’s Law
What is Ohm’s Law, and how does it work? In this Science LIVE episode, Dr. Roger Billings simplifies it for students! Explore electricity basics as he explains the connection between voltage, current, and resistance with real-world examples and practical tips.
Thank you!
Love new information and I really dislike the change of daylight saving time.
Nice! Learning about measuring electricity was pretty interesting.
Measuring electricity is awesome!
This is so neat!!
I liked r-51 a lot!
R-51 is goofy
Yes please put mutimeters on the store in a black and gray color
I didn’t even know measuring electricity was a thing thank you!
Can we get a book like that??
so cool loved learning about Resistance and Multimeters
Amazing live as usual
Thank you!!
This is so cool! Also that end bit was really meaningful
ha so funny. I love R-51
I love how multimeters work
I really liked learning how to measure electricity. I learned something new.
I love R-51
I love how the original mouse actually looked a lot more like a mouse!
Learning about how to measure electricity is really cool!
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.
I love the store! thank you for making it!
R-51 is so funny!
I love a pink mulitmeter in gold store
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.
Whats you guys favorite school subject? (Besides science)
I LOVE YOU DR ROGER BILLING
It was very cool to hear about 4 new planets circling Barnard’s star, how big are they?
Thankful for Acellus and being able to learn about technology
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!
I love how the mouse was invented.
Learning about Ohm’s Law and how electricity works is so interesting
multimeters are fascinating!!!
I really enjoyed learning how to measure electricity!
Did Elon Musk get the name Tesla after the guy named Tesla?
Love learning about electricity
Wow this episode was great
Always love breakthrough moments in science
THIS IS SO COOL
I’m so thankful for Acellus:)
One of my favorite videos yet! thank you for sharing this.
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.
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.
I love the ai bit 😂
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.
My dad uses multimeters in his work
I did not understand how voltage was measured before, great Science Live
This is good information to have because almost everything has batteries now.
Tobias has always been an awesome segment but this one was super interesting.
I couldn’t imagine having to use arrow keys to move around my cursor so glad we have computer mice
Wow this science live was very informative and i really enjoyed it!
Woah, I didn’t know we could measure electricity!
Electricity Is really cool!
Cool video.
where do you find muscle wire?
I love Science Live videos!
Thankful for the video lives
Thank you Dr. Roger Billings for this program.
Love Science Live
Love Acellus
Jingle bells was funny
Are multimeters able to detect electromagnetic fields from a light installation?
This is literally my favorite episode of science life. I’m hopefully going to be an electrician someday!!⚡️⚡️
I would like to have a red one in the store. This was a great video!
Yes, please put the multimeters in the Gold Store – purple or red
Acellus is the best!
Thank you for this Episode of Science live, Second week on Acellus so far!
Watching from connecticut
We love acellus, My son har soared with his learning skills since joining.
Wow! i really liked this one! so interesting!
I’ve always wondered how electricity works, and I do now.
Nice watch Dr.B!
That is amazing, i love watching science live, Roger billing and Pajet are remarkble when they are together
this one was quite mind boggling!
Pretty cool
Can you put a purple multimeter in the store.
Do they know why some resistors are more tolerant than others?
i wonder what the most amount of voltage ever pushed through any given conductor was.
what factors affect the resistance of a conductor?
I really loved this one!
I have to use a mouse with my computer. I cant imagine it any other way.
This is so amazing!
I want my own star now
why should you make sure the circuit is powered off?
I love science live q(≧▽≦q)
i love acellus [:
I wish I could be there and see how science live do it.
I love watching science live!
this Wednesday was one of my favorites :}
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 .✌
What is a multimeter?
Wow! I had no clue that that’s house mice for computers came to be.
Love Acellus
It was pretty fun with DR. Roger Billings
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!!
I love daylight savings time! Lighter longer
this is awesome!!!!!!
Cool episode!
This was super cool
That’s cool!!!!!!!!!
lol this is so funny im 10 and love the part where you say nope that is my watch lol I love science live
Love loved this!
I think electricity is very interesting.
I found it interesting that the muscle wire reforms back to its original position when heated up.
I can’t imagine having to use the arrow keys to control my cursor. We are lucky to have people willing to innovate.
I wish I could go to science live
I love science live I hope a new one is come in 10 days(づ｡◕‿‿◕｡)づ
I love learning science!
This was so cool!
This is so amazing!!
So each piece of memory wire can only remember one memory. So how many would it take to move like a person?
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.
Very interesting! I liked learning about resistance.
This was really cool!
Love all the opportunities to learn from someone who knows their stuff !!
I heard you can pay to have a star named after you
Measuring energy is a very cool
I had no idea that the mouse used to be wood.
I had no idea that is how the mouse was made! Amazing!
My Dad has one.
I love this program and all the learning opportunities!
I love watching science live!
What’s your favorite subject in science
I found it interesting how if heated up, the muscle wire goes back to he state it remembers.
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
Really enjoyed learning about resistance and everything else y’all talked about. Thank you!
I think that you should do Acellus golden colored multimeaders
YESSS!!!!! I WANT A MULTI METER IN THE GOLD STORE!!!
you guys make learning entertaining thank you
I love this science live video !
What are transmitters?
The evolution of the mouse was so cool .
❤🔥
I wish I could go to science live so bad
Thanks for this lesson on measuring electricity. Multimeters are such useful tools for checking voltage, resistance, and current in everyday devices.
Electricity is so cool
I never thought about how life was like using a computer with no mouse!!
How do you build a robot?
Acting and Filmmaking courses would be amazing!
yes, I think a multimeter would definitely be a good addition to the Acellus Store, and it should be in the Acellus blue.
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.
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.
Wow I wish I could go to science live!!
How does energy transfer to battery’s?
Love how he starts every episode keeps them fun and entertaining.
I think it’s so cool that this program has come so far but you’re still looking for suggestions thank you
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!!
I love that this teaches me about tools that measure electricity.
I love this keep it up.
I REALLY love watching SCIENCE LIVE !!!
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
How many mouses did Steve job create until he made the perfect one?
My favorite part was when Mr. Billings showed how a resister worked.
I did some electrical work with resistors, but I have learned the most from this video
Love these videos they’re so fun!
i LOVE how these videos are formatted to be entertaining yet informative at the same time. learning about electricity is so cool!!
That so cool!
Thank you for explanation about Voltage
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.
I love watching these videos.
I love watching science live! Always very interesting
It was interesting to learn about the creation of the mouse and its uses. Thank you for another great science live!
Daylight savings is cool but weird
My daddy is an electrician and he has a lot of electric guys that work with him.
I love science
we love the lives
Thank you for making science live!
Day light savings has been such a fun topic to learn about! Really enjoyed this video
These are so cool to watch
Daylight savings…I don’t like it when we lose one hour
its amazing how electricity works
I LOVE THIS AND MYSELF AND DAD ARE GOING TO DO SOME SCIENCE IN THE GARAGE.
R51 is so funny!
Rly fun to watch
I love Acellus!
awesome lesson! <3
Knowing Ohm’s Law while watching this science live really helps.
love this so cool
What is the highest voltage for a home appliance?
I found it interesting about the measurement volts of electricity or resistance in the video.
This was great.
Love watching these!
I loved this, science live is my favorite.
How long did it take to make acellus?
daylight savings time is so cool but weird
My favorite teacher is Mark Rogers! He helped me so much in math with fractions!
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.
Muscle wire is so cool! I would love to become a scientist or engineer and create something innovative.
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!
cool
Congratulations Charlie!
It was so awesome to learn how the mouse was invented and reinvented!
Always assume the power is on guys 🙂
I lovvvveeee Science Live, I watch it in the car!
this is so cool the way eletricity works
really enjoyed this
we don’t have daylight saving in hawaii
Happy to be on Science Live!
The story at the end was so sweet! This was so interesting though!
We just used a multimeter last week to fix our refridgerator!
Daylight savings messes me up
I enjoyed it, thank YOU so much!
I love robots too!
Happy to be on Science Live!
Daylight Savings Time messes me up.
I enjoy these videos. They get me excited about science.
This was a fun watch! The Christopher story was as sweet as chocolate.
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.
i loved this episode! Learning the way the mouse is made was incredibly interesting.
Hooray for Charlie!
If you send a million volts through a smaller resister, why doesn’t it blow out the resister?
This was so fun to watch and learn!
How hot does the wire have to be for it to stop reforming
Great video Dr.john gave a great presentation on explaining how the robotic arm works
Its always interesting how resistance works
so happy in in this program!
I loved how dr. John explained how the extremely high tech robot arm worked.
Wow! Muscle Wire is awesome!🤩
Please hurry on the filming course I want to do it before I am done with school
I never thought about how complex just a mouse is.
wow never knew resistance could be so cool
I love your videos DR.Roger Billings
These videos are so encouraging.
electricity is so cool!! ❤︎︎
So, you said it can take on jobs people don’t enjoy or can’t do…. What about dirty jobs?
I love that this teaches me about the tools that measure electricity.
so many things go into having electricity, it’s so fun to learn about it!
Haha R-51 is so funny!
Fascinating information about the mouse! Thanks Acellus!
I had no idea that NASA was involved in the development of the mouse.
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!!
I love learning about electricity it has always been so Interesting to me
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.
I agree that using mouse helps the interaction to computer is easier, cannot imagine how people in older times work with computer.
My dad showed me the multimeter. It is very cool.
It’s very interesting because we use electricity in everything today: our computer, our phone, our TV, everything we have in the house.
I love learning about electricity and how it all works
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!
I have always wondered what those transformer boxes were, theres a few randomly around the neighborhood.
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!
I enjoyed this video about resistance and multimeters!
So many things play into resistance and how it works.
This was a super interesting episode cause I love electricity, Thankyou DR,B
I love learning about electricity!
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.
What is the memory wire made of?
Acellus makes learning fun and interesting
How long has NASA been around?
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
I had no idea the mouse was made that way, cool!
Electricity is my favorite science study!
PINK!!!!!!!
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.
We are watching together with my grandmother.
I never realized you can measure electricity.
Thank you for teaching me all of the science that you know to make me smarter.
I’d like green multi meters!
It’s amazing how the# of wires wrapping around can change how much energy goes through.
Wow interesting that’s how electricity it measured!
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!
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!
My great grandfather has a star named after him
I loved learning about the multimeters and memory wire. Is there some where I can get memory wire to experiment with?
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?
I loved hearing the history of the mouse.
Why did the mouse had 3 buttons?
Why is day light savings a thing?
Great video on multimeters!
I didn’t know that multimeters had many different functions!
Wow that’s pretty cool I didn’t know there was a way to “measure” electricity
It is awesome how useful multimeters are in finding problems in circuits.
Great job Charlie!
I loved this! Thanks so much!
They do not do daylight savings where i live in Puerto Rico!