Question

As shown in the figure, a point charge $Q$ is placed at the centre of conducting spherical shell of inner radius $a$ and outer radius $b$. The electric field due to charge $Q$ in three different regions I, II and III is given by:
(I: $r < a$, II: $a < r < b$, III: $r>b)$

• A. $E_I=0, E_{I I}=0, E_{I I I}=0$
• B. $E_I \neq 0, E_{I I}=0, E_{I I}=0$
• C. $E_I=0, E_{I I}=0, E_{I I I} \neq 0$
• D. $E_I \neq 0, E_{I I}=0, E_{I I I} \neq 0$

Answer 1

Answer: (D)

Electric field inside material of conductor is zero.