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

  • question_answer
                                          How much inductance should be connected to 200 V, 50 Hz AC supply so that a maximum current of 0.9 A flows through it?

    A) 5 H                  

    B) 1 H     

    C) 10 H                            

    D) 4.5 H  

    Correct Answer: B

    Solution :

    (b) 1 H                                                  The current in the inductor coil is given by \[{{l}_{0}}=\frac{{{E}_{0}}}{{{X}_{L}}}=\frac{\sqrt{2}{{E}_{v}}}{2\pi vL}\] \[L=\frac{\sqrt{2}\,{{E}_{v}}}{2\pi v{{l}_{0}}}=\frac{1.414\times 200}{2\times 3.14\times 50\times 0.9}=1H\]


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