Question

What happens to the capacitance when a dielectric is introduced between its plates?

(a) Increases

(b) Decreases

(c) Remains the same

(d) Becomes zero

This question was posed to me in homework.

This interesting question is from Composite Dielectric Capacitor topic in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct answer is (a) Increases

To explain: The capacitance of a capacitance increases when a dielectric is introduced between its plates because the capacitance is related to the dielectric constant k by the equation:

C=k∈0A/d.