Figue shows a parallel plate capacitor with plate area `A` and plate separation `d`. A potential difference is being applied between the plates. The battery is then disconnected and a dielectric slab of dieletric constant K is placed in between the plates of the capacitor as shown.

The electric field in the dielectric slab is

Options

A. `V/(Kd)`
B. `(KV)/d`
C. `V/d`
D. `(KV)/t`

Answer

A

Explanation

`E_("dielectric")=E_0/K=V/(Kd)`