Question

Find the electric potential at a point located at 0.05m of a charge of +8x10^-6C. Find the potential energy of a charge of 3x10^-9C that is located at that same point.

Answer 1

The potential in the first situation is

$$V_1=\frac{kq_1}{d}=1440\text{ kV}.$$

In the second situation, it is

$$V_2=\frac{kq_2}{d}=540\text{ V}.$$