Question

What happens to the capacitance of a multi plate capacitor when the area of cross section of the plate decreases?

(a) Increases

(b) Decreases

(c) Remains constant

(d) Becomes zero

The question was posed to me during an online exam.

I need to ask this question from Capacitance of a Multi Plate Capacitor in division Capacitance and Capacitors of Basic Electrical Engineering

Answer 1

Correct answer is (b) Decreases

For explanation I would say: When the area of cross section decreases, the capacitance also decreases since it is related by the formula C=Actual permittivity*(n-1)*A/d. Here, we can see that the capacitance is directly proportional to the area of cross section.