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8 November, 10:50

A 16.0 m long, thin, uniform metal rod slides north at a speed of 21.0 m/s. The length of the rod maintains an east-west orientation while sliding. The vertical component of the Earth's magnetic field at this location has a magnitude of 42.0 µT. What is the magnitude of the induced emf between the ends of the rod (in mV) ?

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  1. 8 November, 11:31
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    14.112 mV

    Explanation:

    L = 16 m, v = 21 m/s, B = 42 μ T = 42 x 10^-6 T

    The formula for the induced emf is given by

    e = B x v x L

    e = 42 x 10^-6 x 21 x 16 = 14.112 x 10^-3 V = 14.112 mV

    Thus, the induce emf is 14.112 mV.
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