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[" Two conducting concentric,hollow sphe...

[" Two conducting concentric,hollow spheres A "],[" and B have radii a and b respectively,with A "],[" inside B.Their common potentials is V.A is "],[" now given some charge such that its potential "],[" becomes zero.The potential of B will now be "],[[" (a) "0," (b) "V(1-a/b)],[" (c) "Vab," (d) Vb/a "]]

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