Two co-axial circular coils of radii 50 cm and 5 cm are separated by a distance of 50 cm and carry currents 3 A and 2 A respectively. Calcualte the mutual inductance of the two coils.

Two concentric circular coils A and B have radii 25cm and 15 cm and carry currents 10A and 15A respectively. A has 24 turns and B has 18 turns. The direction of currents are in opposite order. The magnetic induction at the common centre of the coils is

The mutual inductance of two coil of radii a and b (a

Two concentric circular loops of radii 1 cm and 20 cm are placed coaxially. Find mutual inductance of the arrangement.

A circular coil of diameter 2 cm and 100 turns is placed at the centre of a long solenoid of radius 5 cm and 10 turns//cm . The mutual inductance of the two coils will be nearest to:

Two concentric circular coils A and B have radii 25cm and 15cm and carry currents 10A and 15A respectively. A has 24 turns and B has 18 turns. The direction of currents are in opposite order. The magnetic induction at the common centre of the coil is

A long solenoid of length 50 cm and cross sectional area 10cm^2 is closely wound with 1000 turns of wire. A small coil of 10 turns surrounds it at its centre. Calculate the mutual inductance of the two coils.

Two circular coils of radii 5.0 cm and 10 cm carry equal currents of 2.0 A. The coils have 50 and 100 turns respectively and are placed in such a way that their planes as well as the centres coincide. Find the magnitude of the magnetic field B at the common centre of the coils if the currents in the coils are (a) in the same sense (b) in the opposite sense.

Two circular coils of radii 5.0 cm and 10 cm carry equal currents of 2.0 A. The coils have 50 and 100 turns respectively and are placed in such a way that their planes as well as the centres coincide. Find the magnitude of the magnetic field B at the common centre of the coils if the currents in the coils are (a) in the same sense (b) in the opposite sense.