A coil al a moving Coil galvanometer twists through `90^@` when a current of one microampere is passed through it. If the area of the coil is `10^-4 m^2` and it has `100` turns, calculate the magnetic field of the magnet of the galvanometer. Given, `k = 10^-8N -m /degree.`

The coil of moving coil galvanometer twists through 90^@ when a current of one micro ampere is passed through it. If the area of the coil is 10^(-4) m^2 and its has 100 turns ,calculate the magnetic field of the magnet of the galvanometer, [ Given C=10^(-8) Nm / degree ]

The coil of a suspended coil galvanometer has a very high resistance when a momentary current is passed through the coil. It

A moving coil galvanometer shows deflection of 100 divisions when 20 A current is passed through it.If resistance of galvanometer coil is 50ohm ,then find voltage sensitivity of galvanometer.

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

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 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. Then the value of torsionl constant of the spring is

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. The sensitivity of the instrument is

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. Then the value of torsionl constant of the spring is

A current of "2" amperes is flowing through a circular coil of radius "10cm" containing 100 turns.The magnetic flux density at the centre of the coil is n *0.063 *10-2 wb/m2 .Find n ?

A galvanometer coil has a resistance of 100 Omega . When a current passes through the galvanometer, 1% of the current goes through the coil and the rest through the shunt. Find the resistance of the shunt.