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Consider two concentric conducting spher...

Consider two concentric conducting sphere of radii R and 2R respectively. The inner sphere is given a charge + Q. The other sphere is grounded. The potential at `r = (3R)/2` is R

A

`1/(4piepsilon_0)Q/(6R)`

B

0

C

`1/(4piepsilon_0)(2Q)/(3R)`

D

`1/(4piepsilon_0)(Q)/(R)`

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