A solid, uncharged conducting sphere of radius 3 a contains a concentric hollowed spherical cavity of radius a . A point charge + Q is placed at the center of the spheres. Taking V = 0 at r → ∞ , the potential at position r = 2 a from the center is-

Question

A solid, uncharged conducting sphere of radius 3 a contains a concentric hollowed spherical cavity of radius a . A point charge + Q is placed at the center of the spheres. Taking V = 0 at r → ∞ , the potential at position r = 2 a from the center is-, K Q a, K Q 2 a, K Q 3 a, 2 K Q 3 a

MARKS App · Accepted Answer

Final Charge distribution will be as shown Therefore potential at r = 2 a is given by V = K Q 2 a - K Q 2 a + K Q 3 a V = K Q 3 a

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