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 charge $q_A$ is slowly moved inside the shell, then choose the statement$(s)$
- ACharge distribution on the inner and outer face of the shell changes
- BThe force acting on the charge $B$ charges
- CThe charge $B$ also starts moving slowly
- ✓None of these

