A torque of 25 N m acts on a current carrying coil of area `5 m^(2)` and magnetic moment `2 A m^(2)` in a magnetic field of induction `2Wb//m^(2)`. The angle between normal to coil and magnetic induction is `30^(@)`. Then value of current is

A bar magnet of magnetic moment 0.4 Am^(2) is placed in a uniform magnetic field of induction 5 xx10^(-2) tesla. The angle between the magnetic induction and the magnetic moment is 30^(@) . The torque acting on the magnet is

The number of electrons flowing in a current carrying circular coil per second having area 2m^2 and magnetic moment 8Am^2 is

The number of electrons flowing in a current carrying circular coil per second having area of 2m^(2) and magnetic moment of 8" A m"^(2) is

The number of electrons flowing in a current carrying circular coil per second having area of 2m^(2) and magnetic moment of 8" A m"^(2) is

A current-carrying coil of magnetic moment vecM is placed in a uniform magnetic field of induction vecB such that the angle between vecM and vecB is 30^(@) . If M=5 A.m^(2) and B=0.2 Wb//m^(2) , what is the torque acting on the coil?

The torque acting on a magnetie dipole of moment 5 A m^(2) when placed in an external uniform magnetic induction 1.5 xx 10^(-4)" Wb/m"^(2) at right angle to magnetic induction is

The torque acting on a magnetie dipole of moment 5 A m^(2) when placed in an external uniform magnetic induction 1.5 xx 10^(-4)" Wb/m"^(2) at right angle to magnetic induction is

A circular coil of radius 4 cm having 20 turns carries a current of 3A.It is a magnetic field of intensity 0.5 Wb//m^(2) .The magnetic dipole moment of the coil is

A torque of 2.5 Nm acts on a current carrying rectangular coil of area 0.2 m^(2) , suspended vertically in a uniform magnetic field. What is the torque, if the rectangular coil is replaced by a plane circular coil of the same area? [all other quantities are unaltered]

A coil of effective area 4m^(2) is placed with its plane perpendicular to magnetic induction of 0.04 Wb//m^(2) . The induced emf in the coil if magnetic induction reduces to (1//4)^(th) of its original value in 0.5 s will be