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

  • question_answer
    In a series LCR circuit, resistance, voltage and frequency of the main supply is \[200\text{ }\Omega ,\text{ }220\text{ }V\]and 50 Hz respectively. If capacitor is taken out from the circuit, the current lags behind the voltage by \[30{}^\circ \]. If inductor is taken out from the circuit, the current leads the voltage by \[30{}^\circ \]. The power dissipated in LCR-circuit is:

    A) zero                  

    B) 210 W  

    C) 242 W                          

    D) 305 W

    Correct Answer: C

    Solution :

    (c) 242 W


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