current i is flowing in a coil of area A & number of turns N , then magnetic moment of coil is M is

Current is flowing in acoil of area A and number of turns N, then magnetic moment of the coil ,M is equal to

A current of 2 ampere is passed in a coil of radius 0.5 m and number of turns 20.The magnetic moment of the coil is

A current of 2 ampere is flowing through a coil of radius 0.1 m and having 10 turns. The magnetic moment of the coil will be :

A coil of length L, carries a current i. The magnetic moment of coil is proportional to

A moving coil galvanometer coil has a coil of area A, number of turns N. The radial magnetic field present is B. the moment of inertia of the coil is I about its rotation axis. The torque is applied by the magnetic field on the coil of the galvanometer when current I_(0) passes through it and produces a deflection of pi//2 of the pointer. Then answer the following questions based on the paragraph. If the charge Q is passed almost instantaneosly through the coil, the angular velocity of the coil, immediately after this is

Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is

A uniform conducting wire of length length 10a and resistance R is wound up into four turn as a current carrying coil in the shape of equilateral triangle of side a. If current I is flowing 4 through the coil then the magnetic moment of the coil is