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Discussion :: Materials and Components

  1. The number of turns in a coil is doubled. If initial time constant is T, the new time constant is

    2. A.
    T
    B.
    2T
    C.
    4T
    D.

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    Answer : Option B

    Explanation :

    When N is doubled, resistance becomes twice and inductance becomes four times.

    Since time constant is , time contant become twice.

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