Question: What is the potential difference across a capacitor if it stores 10 µC of charge and has a capacitance of 5 µF?

Options:

1. 2 V
2. 5 V
3. 10 V
4. 20 V

Correct Answer: 2 V

Solution:

Using C = Q/V, we find V = Q/C = 10 µC / 5 µF = 2 V.