Question

What happens to relative permittivity when actual permittivity decreases?

(a) Increases

(b) Decreases

(c) Remains the same

(d) Becomes zero

The question was posed to me in examination.

I would like to ask this question from Relative Permittivity in portion Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct choice is (b) Decreases

To explain I would say: Relative permittivity is the ratio of actual permittivity to the absolute permittivity. Relative permittivity is directly proportional to actual permittivity. Hence, as actual permittivity decreases, relative permittivity also decreases.