Question

The radius of each plate in a parallel plate capacitor is 10 cm. If the distance between the plates is 10 cm, then calculate the capacitance of capacitor in air.

Answer 1

Radius of plate = 10 cm = 10 × 10^-2 m
Cross sectional area of plate ( A) = πr²
= π × (10 × 10^-2)²
Distance between plate (d) = 10 cm - 10 ×10^-2 m
Capacitance of parallel plate capacitor