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Discussion :: Network Analysis and Synthesis

  1. In an air cored coil, a current of 0.7 A causes a flux of 5 x 10-6 Wb. If the core is made of cast iron and the coil is similar, the same current can set up a flux of about

    2. A.
    5 x 10-6 Wb
    B.
    5 x 10-8 Wb
    C.
    10-2 Wb
    D.
    5 x 10-4 Wb

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    Answer : Option D

    Explanation :

    The permeability of cast iron is about 100.

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