Question

A capacitor of `20 muF` is charged to `500` volts and connected in parallel ith another capacitor of `10 muF` and charged to `200` volts. The common potential is
A. `200` volts
B. `300` volts
C. `400` volts
D. `500` volts

Answer 1

Correct Answer - C
`V = (V_(1)C_(1) + V_(2)C_(2))/(C_(1) + C_(2)) = (500 xx 20 + 200 xx 10)/(20 + 10) = 400 V`