Electric Potential Energy of Charge System

Electric Potential Energy of Charge System

### Formula

$$U=\frac{1}{4\pi\epsilon_0}\frac{q_1q_2}{r}$$

### For Multiple Charges

$$U=\frac{1}{4\pi\epsilon_0}\sum\frac{q_iq_j}{r_{ij}}$$

### Terminologies

- rij → Distance between charges.

- qi,qj → Individual charges.

### Usage

- Used in multi-charge systems.