Question

# Two concentric spherical conducting shells of radii R and 2R carry charges Q and 2Q respectively, change in electric potential on the outer shell when both are connected by a conducting wire is:

A

## zero

B
C
D
Medium
Solution
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Correct option is A)

## The potential due to a charged spherical sphere with radius is given byIf we two spherical conducting shells of radii and carry charges and , then + Charge remains constant before and after connecting them , so Final Charge Hence

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