The coil of a galvanometer is `0.02 xx 0.06 m^2`. It consits of 200 turns of fine wire and is in a magnetic field of 0.2 tesla. The restoring torque constant of the suspension fibre is `10^-6` N m per degree. Assuming the magnetic field to be radial.What is the smallest current that can be detected, if the minimum observable deflection is `0.1^@`?

The coil of a galvanometer is 0.02 xx 0.06 m^2 . It consits of 200 turns of fine wire and is in a magnetic field of 0.2 tesla. The restoring torque constant of the suspension fibre is 10^-6 N m per degree. Assuming the magnetic field to be radial. What is the maxium current that can be measured by this galvanometer, if the scale can accommodate 30^@ deflection?

A circular loop of area 0.01 m^(2) carrying a current of 10 A, is held perpendicular to a magnetic field of intensity 0.1 T. The torque acting on the loop is

A circular coil of 50 turns and radius 0.2 cm carries a current of 12 A. Find magnetic field at the centre of the coil.

The magnetic moment of a magnet is 0.1 amp xx m^2 . It is suspended in a magnetic field of intensity 3 xx 10^-4 weber/m^2 . The couple acting upon it when deflected by 30^@ from the magnetic field is:

A two metre wire is moving with a velocity of 1 m/s perpendicular to a magnetic field of 0.5 Wb/m^2 . The emf induced in it will be

A short bar magnet placed with its axis at 30^@ to a uniform magnetic field of 0.2 T experience a torque of 0.06 Nm. Find out what orientation of the magnet corrsponds to a stable equilibrium in the magnetic field?

A short bar magnet placed with its axis at 30^@ to a uniform magnetic field of 0.2 T experience a torque of 0.06 Nm. Calculate magnetic moment of the magnet?

A magnetic field of flux density 10 T acts normal to a coil of 50 turns having 100cm^2 area. Find e.m.f. iduced, if the coil is removed from the magnetic field on 0.1 s.

A paramagnetic sample shows a net magnetism of 8Am^-1 when placed in an external magnetic field of 0.6 T at a temperature of 4K. When the same sample is placed in the external magnetic field of 0.2 T at a temperature of 16 K, the magnetisation will be