JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Application of EMI (Motor, Dynamo, Transformer)

  • question_answer
    The output voltage of a transformer connected to 220 volt line is 1100 volt at 1 amp current. Its efficiency is 100%. The current coming from the line is                             [Pb. PET 2003]

    A)            20 A                                         

    B)            10 A

    C)            11 A                                         

    D)            22 A

    Correct Answer: B

    Solution :

                       For 100% efficiency \[{{V}_{s}}{{i}_{s}}={{V}_{p}}{{i}_{p}}\]            \[\Rightarrow 1100\times 2=220\times {{i}_{p}}\Rightarrow {{i}_{p}}=10A\]


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