Question

What happens to the capacitance of a multi plate capacitor when the distance of separation between the plate increases?

(a) Increases

(b) Decreases

(c) Remains constant

(d) Becomes zero

This question was posed to me in quiz.

My question is from Capacitance of a Multi Plate Capacitor topic in chapter Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct answer is (b) Decreases

The explanation is: When the distance of separation between the plates increases, the capacitance decreases since it is related by the formula C=Actual permittivity*(n-1)*A/d. Here, we can see that the capacitance is inversely proportional to the distance of separation.