A wire 88 cm long bent into a circular loop is kept with plane of the coil perpendicular to the magnetic induction `2.5 Wb//m^2`. Within 0.5 second, the coil is changed to a square and magnetic induction is increased by `0.5 Wb//m^2`. Calculate the e.m.f. induced in the wire.

A square wire loop with sides 0.5 m is placed with its plane perpendicular to the magnetic field.The resistance of the loop is 5 Omega .Find at what rate the magnetic induction should be changed so that a current of 0.1 A is induced in the loop.

A conductor of length 0.3 m moves with a uniform velocity of 10 m//s at right angles to the magnetic field of induction 0.5 xx 10^-4 Wb//m^2 . Calculate the e.m.f. induced in it.

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 Conductor of length 10 cm is moved parallel to itself with a speed of 10 m/s at right angle to magnetic induction 10^_4(Wb)/m^2 . Find the e.m.f. induced in it.

The magnetic induction at a point distant 15 cm on the axis of a short bar magnet of moment 0.5 A m is

A circular coil of 100 turns with a crosssectional area (A) of 1m^2 is kept with its plane perpendicular to the magnetic field (B) of 1 T.What is the magnetic flux linkage with the coil?

A coil having 50 turns and an area of 800cm^2 is held with its plane perpendicular to uniform magnetic field of induction 5 xx 10^-5 Wb/m^2 .If it is pulled out of the field in 2 second ,then the e.m.f.induced in the coil will be

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.

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 magnitude of magnetic induction at a point in a magnetic field of area 25 cm and magnetic flux 5xx 10^(-4)Wb is