engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Capacitance Calculating the Capacitance
The capacitance of an isolated conducting sphere of radius R1 becomes n times when it is enclosed by a concentric conducting sphere of radius R2 connected to earth. The ratio of their radii (R2/R1) is:
1
\(\rm \frac{n}{n-1}\)
2
\(\rm \frac{2n}{2n + 1}\)
3
\(\rm \frac{n+1}{n}\)
4
\(\rm \frac{2n + 1}{n}\)