Three concentric metal shells A, B and C of respective radii a, b and c (a < b < c) have surface charge densities +σ, -σ and +σ respectively. The potential of shell B is

 

Answer

 

The correct option is (1).

Money Back Guarantee

Your purchase includes 100% 7-day money back guarantee.

money-back-guarantee

If you are, for any reason, not entirely happy with your purchase, we will cheerfully issue you a full refund.