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A train of mass 100 tons (1 tons =1000kg...

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 electrical power consumed by the trains is

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