CAPE Physics Unit 2 · 2017 · Paper 1 · Question Q8

The energy stored in a capacitor is given by

1. (A)W = \frac{Q}{C}
2. (B)W = \frac{Q}{2C}
3. (C)W = \frac{C}{2Q^2}
4. (D)W = \frac{Q^2}{2C}