A small coil of radius `r` is placed at the centre of a large coil of radius `R`, where `R gtgt r`. The two coils are coplanar. The mutual inductance between the coils is proportional to

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

A coil of radius r is placed at the centre of the large coil of radius R where R >> r and coils are in same plane.The coefficient of mutual inductance between the coil is

A small coil of radius r is placed at the centre of another coaxial coil of radius R(Rgtgtr) find the coeffcient for this pair of coils.

A small, flat coil of resitance r is placed at the centre of a large, closed coil of resistance R . The coils are coplanar. Their mutual inductance is M . Initially a constant current i was flowing in the inner coil. If this curent is suddenly swithced off, what charge will circulate in the outer coil?

A coil of radius r is placed at the centre of R>>r and coils are in same plane.The coefficient of mutual inductance between the coil is

Two coils are placed closed to each other. The mutual inductance between them assuming R_(2)lt ltR_(1)

Two concentric circular coils of radius r and R are placed coaxially with centres coinciding If R gt gt r then calculate the mutual inductance the coils.

Two concentric circular coils of radius r and R are placed coaxially with centres coinciding If R gt gt r then calculate the mutual inductance the coils.