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?

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?

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

The ratio of the horizontal component to the resultant magnetic field of earth at a given place is 1//sqrt2 . What is the angle of dip at that place?

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.

An aeroplane is flying horizontally from west to east with a velocity of 900 km/hour. Calculate the potential differnece developed between the ends of its wings having a span of 20 m. The horizontal component of the Earth's magnetic field is 5 xx 10^-4 T and the angle of dip is 30^@ .

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?

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

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