Answer to Question #214205 in Electric Circuits for dgdgg

Question

A capacitor of 5 micro farad is charged to 1 C by using a constant voltage supply. If one of the plates of charged capacitor is earthed after disconnecting it from external voltage supply. Find the new capacitance

Answer 1

Since we are given the capacitance C = 5 $\mu$F = 5 X 10^-6 F, we know that the charge Q = 1 C and this charge will remain on the capacitor since there is no closed circuit when the capacitor is earthed. The new capacitance will be the same as the prior one.

In conclusion, there is no change in the capacitance since the charge will remain in the capacitor as long as there is no closed circuit (thus C = 5 $\mu$F = 5 X 10^-6 F).

Reference:

• Young, H. D., & Freedman, R. A. (2015). University Physics with Modern Physics and Mastering Physics (p. 1632). Academic Imports Sweden AB.