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4 September, 02:42

Magnetic fields are produced either by electric currents or time-varying electric fields.

a. True

b. False

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Answers (1)
  1. 4 September, 03:03
    0
    option (a)

    Explanation:

    The magnetic field is produced by the electric current, and the direction of magnetic field is given by the Maxwells' right hand rule.

    The magnetic field is also be produced by the time varying magnetic fields.
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