Home
Class 12
PHYSICS
A small cylindrical magnet M (Fig) is...

A small cylindrical magnet `M` (Fig) is placed in the centre of a thin coil of radius a consisting of `N` turns. The coil in connected to a ballistic galvanometer. The active resistance of the whole circuit is equal to `R`. Find the magnetic moment of the magnet if its removel from the coil results in a charge `q` flowing through the galvanometer.

Promotional Banner

Similar Questions

Explore conceptually related problems

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 single turn cirular coil is connected to a cell as shown. Magnetic field at the centre O of the coil is

A closed circuit consits of a source of constant and E and a choke coil of inductance L connected in series. The active resistance of the whole circuit is equal to R . At the moment t = 0 the choke coil inductance was decreased abrupty eta times. FInd the current in the circuit as a function of time t .

A closed circuit consits of a source of constant and E and a choke coil of inductance L connected in series. The active resistance of the whole circuit is equal to R . At the moment t = 0 the choke coil inductance was decreased abrupty eta times. FInd the current in the circuit as a function of time t .

A magnet N-S is suspended from a spring and while at oscillates, the magnet moves in and out of the coil C. The coil is connected to a galvanometer G. Then, as the magnet oscillates,

A circular coil of radius 40 mm consists of 250 turns of wire in which the current is 20 mA. The magnetic field at the centre of the coil is

A circular coil of radius 40 mm consists of 250 turns of wire in which the current is 20 mA. The magnetic field at the centre of the coil is