The axles of the carriage of a train travelling at 72 km per hour anr 1.6 m long . Find the difference in potential at their ends if total intensity of the earth's field is ` 0.5 xx 10^(-4)` tesla and angle of dip is `60^(@)` .

A jet plane is moving at a speed of 1000 km h^(-1) . What is the potential difference across the ends of its wings 20 m long. Given total intensity of earth's magnetic field is 3.5xx10^(-4) tesla and angle of dip at the place is 30^(@) .

Deternine the magnitude of the emf generated between the ends of the axle of a railway carriage, 1m in length, when it is moving with a velocity of 36 km/hr along a horizontal track, given horizontal component to Earth's magnetic field B_H=4 xx 10^(-5) Tesla and angle of dip delta= 60^@ .

A straight rod 2m long is placed in an aeroplane in the east-west direction. The aeroplane lifts itself in the upward direction at a speed of 36 kmh^(-1) . Find the potential difference between the two ends of the rod if the vertical component of earth's magnetic field is (1)/(4 sqrt(3)) gauss and angle of dip= 30^(@)

An aeroplane is travelling west at the speed of 500 m//s . What is the voltage difference between the ends of the wings 25 m long. If the earth's magnetic field dip angle is 30^(@) .

The wing span of an aeroplane is 40m. The plane is flying horizontally due north at 360 km/h. What is the potential difference developed between the wing-tips if the horizontla component of the Earth's magnetic field B_(h) = 3.2 xx 10^(-5) T and the angle of dip at the place is 60^(@) ?

A railway track running north south has two parrallel rails 1.0 m apart. Calculate the e.m.f. induced between the rails when a train passes at a speed of 90 km h^(-1) . Horizontal component of earth's magnetic field at that plane is 0.3 xx 10^(-4) T and angle of dip is 60^(@) .

An aeroplane with its wings spread 10 m is flying with speed 180 km/h in horizontal direction. The total intensity of earth's field is 2.5 X 10^-4 Tesla and angle of dip is 60° . Then find emf induced between the tips of the plane wings.