An empty thick conducting shell of inner radius a and outer radiu… - Vidyadip

MCQ

An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$

If the outer surface of the shell is earthed, then identify the correct statement(s)

A
Only the potential of outer surface becomes zero
✓
Charge on the outer surface also becomes zero
C
The outer surface attains negative charge
D
Negative charge on the inner surface decreases

✓

Answer

Correct option: B.

Charge on the outer surface also becomes zero

b

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