A metal rod `1/ (sqrt(pi))` meter long rotates about one of its ends perpendicular to a plane whose magnetic induction is `4xx10^-3T`. Calculate the number of revolutions made by the rod per second if the e.m.f. induced between the ends of the rod is 16mV.

A metal rod 1/ sqrt(pi) meter long rotates about one of its ends in a plane perpendicular to a uniform magnetic induction 5 xx 10^-3 (Wb)/m^2 . Calculate the number of revolutions the rod makes per minute if the induced e.m.f. across it is 15 millivolt.

A rod of length l is rotated about its one end, perpendicular to a magnetic field of induction B What is the e.m.f induced in the rod

The conductor moving with uniform velocity of 10 m//s at right angles to the magnetic field of induction 0.4 xx 10^-4 Wb//m^2 . Calculate length of the conductor if the e.m.f. induced at the ends of conductor is 6 xx 10^-5V .

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.

A metal rod of length lm, rotates about its one end in a plane at right angles to a horizontal magnetic field of induction 7/22xx10^-4T If the frequency of rotation is 10Hz, then the magnitude of induced emf is

A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is 0.2 xx 10^-4T , then the e.m.f. developed between the two ends of the conductor is

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.

A cycle wheel with 10 spokes each of length 0.5 m long is rotated at a speed of 18 km//hr in a plane normal to the earth’s magnetic induction of 3.6 xx 10^-5 T . Calculate the e.m.f. induced between the ends of single spoke and ten spokes.

A cycle wheel with 10 spokes each of length 0.5 m long is rotated at a speed of 18 km//hr in a plane normal to the earth’s magnetic induction of 3.6 xx 10^-5 T . Calculate the e.m.f. induced between the axle and rim of the cycle wheel