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  1. How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V?

    2. A.
    9 V
    B.
    90 V
    C.
    900 V
    D.
    0.9 V

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    Answer : Option B

    Explanation :

    We know that, V2/V1 = N2/N1.

    Given V2 = 9v, N2/N1 = 0.1

    Therefore, 9v/V1 = 0.1

    V1 = 9v/0.1 = 90v.

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