A conductor of length l = 0.6 m with resistance R = 0.05 Ohm moves in a plane perpendicular to a uniform magnetic field with induction B = 0.5 Tesla. A current of force I = 4 A flows through the conductor. The speed of the conductor is 0.8 m/s. How many times does the power spent on moving a conductor in a magnetic field differ from the power spent on heating it?

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