state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Physics Electromagnetic Induction and Inductance Mutual Induction
Consider two coaxial cylinders of same length L, with vacuum inside them. The radii of the inner solenoid and the outer solenoid are r1 and r2 (> r1), respectively. The number of turns per unit length are n1 and n2 for the inner solenoid and the outer solenoid, respectively. The mutual inductance is:
1
π μ0 n1 n2 \(\rm r_2^2\) L
2
π μ0 n1 n2 \(\rm r_1^2\) L
3
4π μ0 n1 n2 \(\rm r_1^2\) L
4
4π μ0 n1 n2 \(\rm r_2^2\) L
5
Question Not Attempted