2. Questions Bank
  3. 12th Class
  4. Physics
  5. Alternating Current / प्रत्यावर्ती धारा

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

  • question_answer
    The average power transferred per cycle to capacitor is:

    A) zero                  

    B) 10.42 W

    C) 17.42 W                       

    D) 15 W

    Correct Answer: A

    Solution :

    (a) zero                         \[{{P}_{C}}={{E}_{v}}{{l}_{v}}\,\,\cos \phi \] In a capacitor, phase difference, \[\phi =90{}^\circ \] \[\therefore {{P}_{L}}={{E}_{v}}{{l}_{v}}\,\cos 90{}^\circ =zero\]


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