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9 September, 20:01

A 320-m length of wire stretches between two towers and carries a 120-a current. determine the magnitude of the force on the wire due to the earth's magnetic field of 5.0 * 10-5t which makes an angle of 60 ∘ with the wire.

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  1. 9 September, 22:14
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    Information provided:

    Length of wire, L = 320 m

    Current through the wire, I = 120 Amps

    Earth's magnetic field acting on the wire, B = 5.0*10^-5 T

    Angle at which the magnetic field acts, Ф = 60°

    By definition;

    Force on the wire, F = LBI Sin Ф

    Substituting;

    F = 320*5*10^-5*120*Sin 60 = 1.663 N
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