Question

In a parallel plate capacitor, the capacity can be increased by decreasing

• A. permeability of the medium.
• B. value of dielectric constant.
• C. area of the plates.
• D. the distance between plates.

Hint:

The capacitance of a parallel plate capacitor is inversely proportional to the distance between the plates. Reducing the distance increases the capacitance.

Answer 1

The Correct Option is D

Step 1: Understanding the formula for capacitance.
The capacitance \( C \) of a parallel plate capacitor is given by the formula: \[ C = \frac{\epsilon A}{d} \] where \( \epsilon \) is the permittivity of the dielectric material between the plates, \( A \) is the area of the plates, and \( d \) is the distance between the plates.
Step 2: Effect of distance between plates.
To increase the capacitance, we need to reduce the distance between the plates. As \( d \) decreases, the capacitance increases.
Step 3: Conclusion.
Thus, the capacitance can be increased by decreasing the distance between the plates, which corresponds to option (D).