Q.
Two conducing concentric hollow spheres of radii a and 2a respectively are shown in the diagram. The inner shell has net charge Q on its surface. The outer shell is neutral. If the outer shell is connected to the earth the heat generated through the connecting wire is
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a
Zero
b
14π∈0.Q22a
c
14π∈0.Q24a
d
14π∈0.Q2a
answer is C.
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Detailed Solution
Outside energy =14π∈0Q22×2a will become zero as the shell is earthed. This energy appears as heat
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