JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Self Evaluation Test - Alternating Current

  • question_answer
    A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 2, 40, 000V by a transformer before it is sent on a high voltage transmission line. The current in transmission line is

    A) 3.67 A

    B) 2.67 A

    C) 1.67 A

    D) 2.40 A

    Correct Answer: C

    Solution :

    [c] For a transformer, \[{{V}_{p}}{{I}_{p}}={{V}_{s}}{{I}_{s}}\,\,\,\Rightarrow \,\,{{I}_{S}}=\frac{{{V}_{p}}{{I}_{p}}}{{{V}_{s}}}=\frac{4000\times 100}{240000}A\] =1.67A


You need to login to perform this action.
You will be redirected in 3 sec spinner