Question

What is dielectric strength?

Options

• The maximum electric field a dielectric can withstand before it breaks down and becomes conducting

• The maximum charge a capacitor can store before its plate area changes

• The electric field produced by a dielectric when no external field is present

• The field at which a dielectric becomes a perfect insulator forever

Answer 1

Dielectric strength is the maximum electric field that a dielectric can withstand before breakdown. At breakdown, it becomes conducting.