A 1.2 wide track is parallel to magnetic meridian . The verticle component of earth's magnetic field is 0.5 gauss. When a train runs on the rails at a speed of 60Km/hr, then the induced potential difference between the ends of its axle will be __

A player with 3 meter long iron rod runs toward east with a speed of 30km//hr . Horizontal component of eath's magnetic field is 4xx10^(-5)Wb//m^(2) . If he runs with the rod in horizontal and vertical position, then the potential difference induced between the two ends of the rod in the two cases will be

A player with 3 meter long iron rod runs toward east with a speed of 30km//hr . Horizontal component of eath's magnetic field is 4xx10^(-5)Wb//m^(2) . If he runs with the rod in horizontal and vertical position, then the potential difference induced between the two ends of the rod in the two cases will be

A 10-meter wire is kept in east-west direction. It is falling down with a speed of 5.0 "meter"//"second" , perpendicular to the horizontal component of earth's magnetic field of 0.30 x×10^(-4) "weber"//"meter"^(2) . The momentary potential difference induced between the ends of the wire will be

A train is moving towards north with a speed of 25 m/s. if the vertical component of the earth's magnetic field is 0.2 xx 10^(-4) T, the emf induced in the axle 1.5 m long is

A train of mass 100 tons (1 tons =1000kg) runs on a meter gauge track ( distance between the two rails is 1m) . The coefficient of friction between the rails and the train is 0045 . The train is powered by an electric engine of 90% efficiency. The train is moving with uniform speed of 72 kmph at its highest speed limilt . Horizontal and vertical component of earth's magnetic field and B_(H)=10^(-5)T and B_(V)=2xx10^(-5)T . Assume the body of the train and rails to be perfectly conducting. The potential difference between the two rails is

The wing span of an aeroplane is 20 metre. It is flying in a field, where the verticle component of magnetic field of earth is 5xx10^(-5) tesla, with velocity 360 km//h . The potential difference produced between the blades will be

The wing span of an aeroplane is 20 metre. It is flying in a field, where the verticle component of magnetic field of earth is 5xx10^(-5) tesla, with velocity 360 km//h . The potential difference produced between the blades will be

Magadh express takes 16 hors to cover the distance of 960km between patna and Gaziabad. The rails are separated by 130 cm and the vertical component of the earth's magnetic field is 4.0 X 10^(-5) T. (a) Find the average emf induced across the witdh of the train. (b) If the leakage resistance between the rails is 100 Omega, find the retarding force on the train due to magnetic field.

Magadh express takes 16 hours to cover the distance of 960km between patna and Gaziabad. The rails are separated by 130 cm and the vertical component of the earth's magnetic field is 4.0 X 10^(-5) T . (a) Find the average emf induced across the width of the train. (b) If the leakage resistance between the rails is 100 Omega, find the retarding force on the train due to magnetic field.