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`

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^@ .

An aeroplane in which the distance between the tips of wings is 50 m is flying horizontal with a speed of 360km//hr over a place where the verticle components of earth magnetic field is 2.0xx10^(-4)webr//m^(2) . The potential different between the tips of wings would be

The two rails of a railway track, insulated from each other and the ground, are connected to a milli voltmeter. What is the reading of the milli voltmeter when a train travels at a speed of 180 km//hours along the track, given that the vertical components of earth's magnitic field is 0.2xx10^(_4) weber//m^(2) & the rails are separated by 1 meter?

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?

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?

An aircraft with a wingspan of 40 m flies with a speed of 1080 km/hr in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of the earth's magnetic field 1.75 xx10^(-5) . Then the emf developed between the tips of the wings is

A train is moving in the north-south direction with a speed of 108 kmh^(-1) . Find the e.m.f. generated between two wheels, if the length of the axle is 2m. Assume that the vertical component of earth's field is 8.0 xx 10^(-5) Wbm^(-2) .

A railway track running North South has two parallel rails 1.0m apart. Calculate the value of induced e.m.f. between the rails when a train passes at a speed of 90 kmh(-1) . Horizontal component of earth’s field at that place is 0.3xx1O(-4) Wbm(-2) and angle of dip is 60^@ .