PhysicsMedium46×since 2002Q7006Three concentric metal shells A, B and C of respective radii a, b and c (a < b < c) have surface charge densities +σ+ \sigma+σ, −σ- \sigma−σ and +σ+ \sigma+σ respectively. The potential of shell B is :Aσ∈0[b2−c2c+a]{\sigma \over { \in {}_0}}\left[ {{{{b^2} - {c^2}} \over c} + a} \right]∈0σ[cb2−c2+a]Bσ∈0[a2−b2a+c]{\sigma \over { \in {}_0}}\left[ {{{{a^2} - {b^2}} \over a} + c} \right]∈0σ[aa2−b2+c]Cσ∈0[a2−b2b+c]{\sigma \over { \in {}_0}}\left[ {{{{a^2} - {b^2}} \over b} + c} \right]∈0σ[ba2−b2+c]Dσ∈0[b2−c2b+a]{\sigma \over { \in {}_0}}\left[ {{{{b^2} - {c^2}} \over b} + a} \right]∈0σ[bb2−c2+a]Check answerSkip