Two concentric shells have radii R and 2R charges q and qB and potentials 2V and 3 2 V respectively Now shell B is earthed and

Question

Two concentric shells have radii R and 2R charges q and qB and potentials 2V and 3 2 V respectively Now shell B is earthed and let charges on them become and Then B A O 9A 9B 1 2 O Potential of A after earthing becomes 3 2 V 4 O None of these

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