A conducting slab is in between a parallel plate capacitor. The thickness of the slab is `t`. The distance between the plates is `d(d gt t)`. A battery of emf 'v' volt is connected across the plates (see diagram). The system attains steady state. Now select the correct options.
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Options

A. The electric field inside the conducting slab is zero.
B. The charge density induced on the surface of the slab should be equal to the charge density on the plates of the capacitor.
C. The electric field inside the slab always be zero, whatever be the metal with which the slab is prepared.
D. The capacitance of the capacitor is increased after the introduction of the slab.

Answer

A, B, C, D

Explanation

Electric field in a conductor is always zero.