Three concentric spherical shells have radii a, b and c (a < b < c) and have surface charge densities σ, – σ and σ respectively. If `V_A , V_B` and `V_C` denote the Potentials of the three shells, then for c = a + b, we have
Options:
(a) `V_C = V_B = V_A`
(b) `V_C = V_B!= V_A`
(c) `V_C!= V_B!= V_A`
(d) `V_C= V_A!= V_B`