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12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank MCQ - Alternating Currents

  • question_answer
    In a step up transformer the turn ratio is 1:2. A Leclanche cell (emf = 1.5 V) is connected across the primary. The voltage across the secondary is:

    A) 3 V                              

    B) 1.5 V    

    C) 0.75 V                          

    D) zero

    Correct Answer: A

    Solution :

    (a) 3 V             \[\frac{{{V}_{S}}}{{{V}_{P}}}=\frac{{{N}_{S}}}{{{N}_{P}}}=\frac{{{V}_{S}}}{1.5}=\frac{2}{1}={{V}_{S}}=3\,V\]


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