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Initially the spheres A and B are at pot...

Initially the spheres A and B are at potentials `V_A` and `V_B`. Find the potential of A when sphere B is earthed.

A

0

B

`V_A`

C

`V_A-V_B`

D

`V_B`

Text Solution

Verified by Experts

The correct Answer is:
C
`q_A` will remain unchanged.
Hence, accordingn to principle of generator potential difference will remain unchanged.
`V_A^'-V_B^'=V_A-V_B`
`V_A^'+V_A-V_B` (as `V_B^'=0)`
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