# How do you calculate voltage drop in a series circuit?

Mar 22, 2018

Multiply the resistance of the component by the current thru it.

#### Explanation:

To calculate voltage drop, E, across a component, you need to know the resistance of the component and the current thru it.

Ohm's Law is $E = I \cdot R$, which tells us to then multiply $I \text{ by } R$. E is the voltage across the component also known as voltage drop.

I hope this helps,
Steve