Teaching OSSSC TGT Teachers Mock Test Series 2025 Physics Electromagnetic Induction and Inductance Inductors and Inductance
Two concentric circular coils having radii r1 and r2 (r2 << r1) are placed co-axially with centres coinciding. The mutual induction of the arrangement is (Both coils have single turn, µ0 = permeability of free space)
1
\(\frac{\mu_{0} \pi r_{2}^{2}}{2 r_{1}}\)
2
\(\frac{\mu_{0} \pi r_{2}}{2 r_{1}}\)
3
\(\frac{\mu_{0} \pi r_{2}^{2}}{r_{1}^{2}}\)
4
\(\frac{\mu_{0} \pi r_{2}}{r_{1}}\)