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12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Case Based (MCQs) - Alternating Currents

  • question_answer
    The Line power loss in the form of heat is:

    A) 550 kW            

    B) 650 kW

    C) 600 kW                        

    D) 700 kW

    Correct Answer: C

    Solution :

    (c) 600 kW Line power loss \[={{l}^{2}}R\] RMS current in the coil, \[l=\frac{P}{{{V}_{1}}}=\frac{800\times {{10}^{3}}}{4000}=200\,A\] \[\therefore \]  Power loss \[={{(200)}^{2}}\times 15=600\,kW\]


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