Questions
A small coil of radius r is placed at the center of a large coil of radius R, where R >> r. The two coils are coplanar. The mutual inductance between the coils is proportional to
detailed solution
Correct option is B
Magnetic field at the centre of a large coil E∝μ0I2RMagnetic flux linked with smaller coil =μ0I2R×πr2M=ϕI=μ0πr22R ∴M∝r2RTalk to our academic expert!
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Two conducting circular loops of radii R1 and R2 are placed in the same plane with their centers coinciding. If , the mutual inductance M between them will be directly proportional to
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