Question

A parallel plate capacitor has a plate separation of `2mm` and use a dielectric (whose dielecric strength is `200 kV//cm)` as an insulator. The maximum potential difference that can be applied to the terminals of the capacitor is
A. `10kV`
B. `20kV`
C. `30kV`
D. `40kV`

Answer 1

Correct Answer - D
Dielectric strength i.e., electric field at which insulator becomes conductor.
`V=Ed=200xx((2)/(10))=40kV`