## Electric Potential

The electric potential at a point is defined as the work done in moving a unit positive charge from infinity to that point.

## Potential Difference

Potential Difference between two points on a conductor carrying current is defined as the work defined in moving a unit positive charge from one point to the other.

Potential Difference = $$\frac{\text { Work Done }(\mathrm{W})}{\text { Charge }(\mathrm{Q})}$$

Example 1.
How much energy is given to each coulomb of charge passing through a 6 V battery?
1 Volt = $$\frac{1 \text { Joule }}{1 \text { Coulomb }}$$