# Ohm's Law

## What is Ohm's Law

What is Ohm's Law?

Georg Ohm is the mind behind Ohm's Law. Ohm's Law shows the relationship between Voltage, Current and Resistance. If you increase the Voltage through a circuit with a fixed resistance, the Current goes up. If you decrease the Voltage, the Current goes down. This is represented through the equation V=IR.

## The Equation

The equation to find voltage in Ohm's law is V=IR. In this equation, you take the Current, multiply it with the resistance and you get the voltage. If you need to find the current, the equation is I=V/R. To find the Resistance the equation is R=V/I.

## Georg Ohm

Georg Ohm is the scientist that figured out Ohm's Law. Ohm created the law to show the difference in current when the Voltage in the circuit was changed. In order for this experiment to work, the circuit needed to have a fixed resistance. For example, if the Resistance in a circuit is 500 Ohms and the Volts are 4.5V, the Current is 9.0mA. This is calculated by using the equation I=V/R. Now as you increase the Voltage but keep the Resistance fixed, the Current will increase as well.