Question Of The Day

The magnitude of earth’s magnetic field at the North pole is B_0­. a horizontal conductor of length l moves with velocity v. the direction of v is perpendicular to the conductor. The induced emf is

        [a] zero, if v is vertical          [b] B₀lv, if v is vertical

        [c] zero, if v is horizontal       [d]B₀lv is v is horizontal

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