If the dielectric constant and dielectric strength be denoted by `K` and `x` respectively, then a material suitable for use as a dielectric in a capacitor must have

Options

A. high `K` and high `x`
B. high `K` and low `x`
C. low `K` and low `x`
D. low `K` and high `x`

Answer

A

Explanation

High `K` means good insulating propetry and high `x` means able to withstand electric field gradient to a higher value.