In a moving coil galvanometer, the magnetic field used is 5T. The coil has 100 turns, each of mean area `10 xx 10^(-4)` m^(2). If a current of `10^(-7)` A produces a deflection of 1 mm on a scale 1m away, calcualte the current reduction factor of the galvanometer and the torsional rigidity of the suspension wire.

A current of 10^(-5)A produced a deflection of 10^(@) in a moving coil galvanometer . A current of 10^(-6)amp in the same galvanometer produces a deflection of 1^(@)

In a suspended type moving coil galvanometer the coil has 60 turns, each of area 2 xx 10^(-4)m^(2) and the strength of the magnetic field is 0.001 T. A current of 20 mA produced a deflection of 10 cm on a scale at a distance of 1m form the instrument. Calcualte the torque per unit twist.

A moving coild galvanometer with a lamp-and-scale arrangement has a coil of 50 turns of mean area 1.5 cm^(2) per turn and the effective strength of the field (radial) is 0.02T. If a current of 10^(-9) A produces a deflection of 1 cm on a scale placed at 1 m away, calcualte the steady torque required to hold the suspension twisted through 1 radian.

A tangent galvanometer has two circular coils having turns in the ratio 1:10 . When the coil with smaller number of turns is used,a current of 0.5A produces a deflection of 45^(@) . What will be the reduction factor of the galvanometer when the coil with larger number of turns is used?

The coil of a moving coil galvanometer has 100 turns each of area 15 cm^(2) . It is suspended in a radial magnetic field of induction 3 xx 10^(-2)Wb//m^(2) . What is the current senstivity of the moving coil galvanometer, if the torsional constant of the suspension fiber is 1.5 xx 10^(-8)Nm /radian ?

Two moving coil galvanometers A and B have rectangular coil of 100 turns each. The area of coil of galvanometers A and B are 2 xx 10^(-4) m^(2) " and " 6 xx 10^(-4) m^(2) respectively. Calculate the ratio of current sensitivity of A to B if coils in both salvanometers are kept in a radial horizontal magnetic field of 0.2 T and the torsional constant of hair springs are also same.

A moving coil galvanometer has 100 turns and each turn has an area 2.0 cm^2 . The magnetic field produced by the magnet is 0.01 T . The deflection in the coil is 0.05 radian when a current of 10 mA is passed through it. Find the torsional constant of the suspension wire.

A moving coil galvanometer has 100 turns and each turn has an area 2.0 cm^2 . The magnetic field produced by the magnet is 0.01 T . The deflection in the coil is 0.05 radian when a current of 10 mA is passed through it. Find the torsional constant of the suspension wire.

A moving coil galvanometer has 100 turns and each turn has an area 2.0 cm^2 . The magnetic field produced by the magnet is 0.01 T . The deflection in the coil is 0.05 radian when a current of 10 mA is passed through it. Find the torsional constant of the suspension wire.

A moving coil galvanometer has 100 turns and each turn has an area 2.0 cm^2 . The magnetic field produced by the magnet is 0.01 T . The deflection in the coil is 0.05 radian when a current of 10 mA is passed through it. Find the torsional constant of the suspension wire.