A conducting loop of area`1m^2` is placed normal to uniform magnetic field `3Wb//m^2`. If the magnetic field is uniformly reduced to `1 Wb// m^2` in a time of 0.5 s, calculate the induced emf produced in the loop.

A coil of effective area 4m^2 is placed at right angles to a magnetic field of induction 0.05Wb//m^2 . If the field is decreased to 20% of its original value in10 seconds, find the e.m.f. induced in the coil.

A search coil having 2000 turns with area 1.5 cm^2 is placed in a magnetic field of 0.60T. The coil is moved rapidly out of the field in a time of 0.2 second.Calculate the induced emf across the search coil.

A rectangular coil (0.5 m xx 0.4m) has a resistance of 5Omega . The coil is placed in a uniform magnetic induction of 0.05 T perpendicular to the place of the coil. If the magnetic induction is uniformly reduced to zero in 5 xx 10^-3s , find the current induced in the coil

A rectangular coil of length 0.5m and breadth 0.2m has a resistance of 10 Omega . The coil is placed in magnetic induction of 0.05 Wb/m^2 and its direction is perpendicular to the plane of the coil.If the magnetic induction is uniformly reduced to zero in time 10 second, find the e.m.f . and current induced in the coil.

A straight wire of length 0.5 metre and carrying a current of 1.2 ampere is placed in a uniform magnetic field of induction 2 tesla. If the magnetic field is perpendicular to the length of the wire , the force acting on the wire is

A straight wire of length 0.5 m carrying a current of 1.6 ampere is placed in a uniform magnetic field of induction 2 T. If the magnetic field is perendicular to the length of the wire, then force on the wire is

The magnetic flux linked with a coil changes from 12xx10^-3 Wb to 6xx10^-3 Wb in 0.01 second. Calculate the induced emf.

A coil having an area 2m^2 is placed in a magnetic field which changes from 1wb//m^2 to 4wb//m^2 in an interval of 2 second. The e.m.f. induced in the coil will be

A metal rod of length 1 m is rotated about one of its endsin a plane at right anglesto a uniform magnetic field of induction 2.5 xx 10^-3Wb//m^2 . If it makes 1800 r.p.m. calculate the induced emf between it.

The torque acting on a magnet of magnetic moment 'M' placed in a uniform magnetic field B is