Answer to Question #311481 in Physics for Dumbo

Question

1. Dielectric Material:_____

Dielectric Constant: 1

Capacitance: 100 µF

Potential Difference: 120 V

Charge:_____

Energy:_____

2. Dielectric Material: Paper

Dielectric Constant:_____

Capacitance:_____

Potential Difference: 11 V

Charge: 6.6 × 10^–5 C

Energy:_____

Answer 1

Dielectric material: air.

Charge

$$q=CV=100*10^{-6}*120=0.012\:\rm C$$

Energy

$$W=\frac{qV}{2}=\frac{0.012*120}{2}=0.72\:\rm J$$