2. Sample Papers
  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-42

  • question_answer
    Two identical p-n junctions may be connected in series with a battery in three ways as shown in figure. The potential differences across the two p-n junctions are equal in       

    A) circuit 1 and circuit 2

    B) circuit 2 and circuit 3

    C) circuit 3 and circuit 1

    D) circuit 1 only

    Correct Answer: B

    Solution :

    In circuit 1-One diode is forward biased while other is reverse biased. So, they offer different resistance and hence potential difference would be different, across the two diodes. In circuit 2-Both the diodes are forward biased, so same resistance and hence same potential difference across the two diodes. In circuit 3-Both the diodes are reverse biased, so resistances are same (but very high) and hence same pontential difference across the two diodes.


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