Question

A charge of 2 C is placed at a point where the external electric potential is 5 V. The potential energy of the charge is:

Options

• \[7\ \text{J}\]

• \[2.5\ \text{J}\]

• \[0.4\ \text{J}\]

• \[10\ \text{J}\]

Answer 1

Using \[U = qV\]: \[U = (2\ \text{C})(5\ \text{V}) = 10\ \text{J}\]. This equals the work done in bringing the charge from infinity to that point.