A rectangular frame of 25 cm 40 cm moves at a constant speed v = 20 i m/s and its plane is normal to a uniform magnetic field of modulus 0.18 T (figure). The resistance of the frame is equal to 1.2. Assuming that only the right side of the frame penetrated the magnetic field, find (a) f. e.m. induced; (b) the force exerted on the frame by the field; (c) electrical power dissipated; (d) the mechanical power required to move the frame at constant speed.

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