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

  • question_answer
    The number of turns in the primary coil of a transformer is 200 and the number of turns in the secondary coil is 10. If 240 volt AC is applied to the primary, the output from the secondary will be        [BHU 1997; JIPMER 2000]

    A)            48 V                                         

    B)            24 V

    C)            12 V                                         

    D)            6 V

    Correct Answer: C

    Solution :

               \[\frac{{{V}_{s}}}{{{V}_{p}}}=\frac{{{N}_{s}}}{{{N}_{p}}}\Rightarrow {{V}_{s}}=\frac{{{N}_{s}}}{{{N}_{p}}}\times {{V}_{p}}=\frac{10}{200}\times 240=12\ volts\]


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