A horizontal straight wire 10 m long extending from east to west is falling with a speed of `5.0 m s^-1`, at right angles to the horizontal component of the earth’s magnetic field, `0.30 xx 10^-4 Wb m^-2`, Which end of the wire is at the higher electrical potential?

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m s^-1 , at right angles to the horizontal component of the earth’s magnetic field, 0.30 xx 10^-4 Wb m^-2 , What is the direction of the emf?

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m s^-1 , at right angles to the horizontal component of the earth’s magnetic field, 0.30 xx 10^-4 Wb m^-2 , What is the instantaneous value of the emf induced in the wire?

The horizontal component of earths's magnetic field at a place is 0.3 xx 10^-4T . If the angle of dip is 60^@ , what is the total earth's magnetic field?

Calculate the e.m.f. induced between the ends of an axle 1.75 m long of a railway carriage travelling at the rate of 50 km h^-1 . The vertical component of the earth's magnetic field 0.5 xx 10^-4 weber m^-2

A metre gauge train is runing due north with a constant speed of 90 km h^-1 on a horizontal track. If the vertical component of earth's magnetic ield is 3xx10^-5 W b m^-2 , calculate the e.m.f. induced across the axle of the train of length 1.25 cm.

At a certain place, the angle of dip is 30^@ and the horizontal component of earth's magnetic field is 0.50 oerested. The earth's total magnetic field (in oerested) is

The magnetic needle of a tangent galvanometer is deflected at an angle 30^(@) due to a magnet. The hoeizontal component of earth's magnetic field 0.34xx10^(-4)T is along the plane of the coil. The magnetic intensity is

A long vertical wire in which a current is flowing produces a neutral point with the earth's magnetic field at a distance of 5 cm from the wire. If the horizontal component of the earth's magnetic induction is 0.18 gauss, then the current in the wire is

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 rad s^(-1) . If the horizontal component of the earth's magnetic field is 0.2xx10^(-4) T , then e.m.f. developed between the two ends of the conductor is