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13 November, 13:49

Suppose a conducting rod is 52 cm long and slides on a pair of rails at 2.75 m/s. What is the strength of the magnetic field in T if a 8 V emf is induced?

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  1. 13 November, 16:22
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    5.6 Tesla

    Explanation:

    L = 52 cm = 0.52 m

    V = 2.75 m/s

    e = 8 V

    Let B be tha magnitude of magnetic field. Use the formula for the motional emf

    e = B * V * L

    B = e / V L

    B = 8 / (2.75 * 0.52)

    B = 5.6 Tesla
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