Question

To decrease the capacitance of a parallel plate capacitor:

• A. a dielectric material is to be introduced between the plates
• B. the area of the plates is to be increased
• C. the area of the plates is to be increased and distance between them is to be decreased
• D. the distance between the plates is to be increased

Hint:

Capacitance is inversely proportional to plate separation. Increase distance to reduce capacitance.

Answer 1

The Correct Option is D

The formula for capacitance of a parallel plate capacitor is: \[ C = \frac{\varepsilon_0 A}{d} \] To decrease \(C\), either \(A\) (area) must decrease or \(d\) (distance) must increase. 
Since only distance can be increased in the given options, that is the correct answer.