In the figure, charge and the potential difference across th... | PHYSICS - ENERGY STORED IN A CAPACITOR | SolveeIt | Solveeit

Today, August 19

Question

In the figure, charge and the potential difference across the 4 mF capacitor will be nearly

A

60mC, 15 volt

B

300 mC, 75 volt

C

800 mC, 200 volt

D

580 mC, 145 volt

Answer

580 mC, 145 volt

Explanation

Solution

V¹ = $\frac { 300 \times \frac { 15 } { 2 } } { \frac { 15 } { 2 } + 8 }$ ; V¹ = $\frac { 300 \times 15 } { 31 }$ 150V

q = CV = 150 × 4 = 600 mC