Question

A spherical conducting shell of inner radius r₁ and outer radius r₂ has a charge Q. A charge q is placed at the centre of the shell. The surface charge density on outer surface of the shell is:

• A. \(\frac{Q+q}{4πr_2^2}\)
• B. \(\frac{Q-q}{4πr_2^2}\)
• C. \(\frac{Q+q}{4π(r_2^2-r_1^2)}\)
• D. \(\frac{Q-q}{4π(r_2^2-r_1^2)}\)

Answer 1

The Correct Option is A

The correct option is (A):

\(\frac{Q+q}{4πr_2^2}\)