A bar of length 0.7 m slides along metal rails at a speed of 1 m/s. The bar and rails are in a magnetic field of 20 T, pointing out into the page. Calculate the motional emf.

MCQs on faraday and henry experiments, magnetic flux, induction faradays law, lenz law, energy conservation, motional electromotive force, energy consideration quantitative study, eddy currents and inductance.