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  1. When number of turns in a coil is trippled, without any change in the length of coil, its self inductance becomes?

    2. A.

     Nine times
    B.

     Three times
    C.

     Six times
    D.

     One–third

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    Answer : Option A

    Explanation :

    L = inductance is proportional to the number of turns per unit length. So self inductance becomes three times. if turns in a coil is trippled, self inductance become nine times.

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