A conductor of length 1.0 m falls freely under gravity from a heigth of 10 m so that it cuts the lines of force the horizontal component of earth's magnetic field of `3 xx 10 (-5) Wb m ^(-2)` . Find the emf induced in the conductor .

A conductor of length 2.0m is falling freely under gravity from a height of 15 m so that it cuts the magnetic lines of force of the horizontal component of Earth's magnetic field of strength 0.3 gauss. Calculate the emf induced across the conductor.

The horizontal component of the earth's magnetic field is 3.6 xx 10^(-5) T where the dip is 60^@ . Find the magnitude of the earth's magnetic field.

A horizontal conducting rod 10 m long extending from east to west is falling with a speed of 5.0 m//s at right angles to the horizontal component of earth's magnetic field, 0.3 xx 10^(-4) Wb//m^(2) . Find the instantaneous value of e.m.f. induced in the rod.

The horizontal telegraph wire 100 m long, oriented along magnetic east west falls freely under gravity to the ground with a speed of 20 cm/s. the horizontal component of earth's magnetic field is 4.0xx10^(-5) tesla. The emf induced in the wire at the instant, the wire strikes the gound is

(a) Draw a labelled diagrame of an ac generator. Obtain the expression for the emf induced in the rotating coil of N turns each of cross-sectional are A, in the presence of a magnetic field overset(to) (B) . (b) A horizonatal conducting rod 10m long extending from east to west is falling with a speed 5.0 ms ^(-1) at right angles to the horizontal component of the Earth's magnetic fields. 0.3 xx 10^(-4) Wb m^(-2) . Find the instantaneous value of the emf induced in the rod .

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 0.2xx10^(-4)T , then the emf developed between the two ends of hte conductor is