# Ohm's Law

## Table of Contents

$$V = IR$$

Where \(V\) is the voltage across the conductor (e.g. a wire), \(I\) is the current through the conductor, and \(R\) is the resistance of the conductor.

Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points. - Wikipedia

## Sources #

## Example #

Kevin measures the current through a 10 ohm resistor to be 0.5 A. He measures the current with the resistor actually connected to the circuit (sorry Mr. Sidney). What is the voltage across the resistor?

$$ V = IR \Longrightarrow V = 10 * 0.5 = 5V $$