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

  • question_answer
    The primary and secondary coils of a transformer have 50 and 1500 turns respectively. The magnetic flux linked with the primary coil is given by \[\phi ={{\phi }_{0}}+4t\], where \[{{\phi }_{0}}\] is a constant. The output voltage across the secondary coil is:

    A) 30 V                

    B) 90 V   

    C) 120 V

    D) 220 V

    Correct Answer: C

    Solution :

    (c) 120 V                      


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