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Two concentric conducting spheres of rad...

Two concentric conducting spheres of radii `R` and `2R` are crrying charges `Q` and `-2Q`, respectively. If the charge on inner sphere is doubled, the potetial differece between the two spheres will

A

Become two times

B

Become four times

C

Be halved

D

Remain same

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta V_(initial) (xW)/R -(x W)/(2R)=(xQ)/(2R) DeltaV_(final)=(2kQ)/R-(2kQ)/(2R)=(kQ)/R=2 Delta V_(initial)`
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