The capacitance of a charged capacitor is C and the energy stored in it is U. What is the value of charge on the capacitor?

Explanation

To find the value of charge (Q) on a charged capacitor with capacitance (C) and energy stored (U), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between energy, capacitance, and voltage**:
The energy (U) stored in a capacitor can be expressed using the formula:
\[
U = \frac{1}{2} C V^2
...