JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Graphical Questions

  • question_answer
    An ac source of variable frequency f is connected to an LCR series circuit. Which one of the graphs in figure. represents the variation of current of current I in the circuit with frequency f

    A)                                 

    B)                          

    C)                                 

    D)                          

    Correct Answer: D

    Solution :

               As explained in solution (1) for frequency \[0-{{f}_{r}},\] Z decreases hence \[(i=V/Z),\] increases and for frequency \[{{f}_{r}}-\infty ,\] Z increases hence i decrees.


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