Copyright

Ohm's Law Lesson for Kids: Definition & History

Instructor: Michelle Jones

Michelle has taught at the elementary level and has earned a master's degree.

This lesson discusses the history and definition of Ohm's Law, which is used to figure out the three major parts of electricity: voltage, current, and resistance.

Ohm's Law

What happens when you make a scientific discovery? You get a law named after you!

Voltage, current, and resistance are all parts of electricity that affect each other. A scientist named Georg Ohm figured out how these three things are related and came up with a formula known as Ohm's Law.

History of Ohm's Law

Like many scientists, Ohm expanded on work done by other scientists who came before him. From 1825 to 1827, he did many experiments and came up with the formula that explains the relationship among voltage, current, and resistance that became very important in the study of electrical circuits. At the time, scientists did not agree with or accept this formula. However, many years later, they realized the value in Ohm's findings, and Ohm's Law became very well-known.

Georg Ohm
Picture of George Ohm

What is Ohm's Law?

Before we get into the actual formula, let's discuss the three parts of the formula. Voltage, labeled with a (V), is the force of an electrical current at the end of its path. This is measured in volts. For example, a 12-volt car battery has more force than a 3-volt watch battery. Current, labeled with an (I), is how fast or slow electricity travels in a certain amount of time. This is measured in amps. Resistance, labeled with an (R), is how the path of electricity resists or fights the flow of electricity. This is measured in ohms. For example, a wide water hose has less resistance than a narrow water hose.

Ohm's Law shows how voltage, current, and resistance are related.

To unlock this lesson you must be a Study.com Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use Study.com

Become a Study.com member and start learning now.
Become a Member  Back
What teachers are saying about Study.com
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account
Support