NEET Sample Paper NEET Sample Test Paper-19

  • question_answer 23) Two identical p-n junctions may be connected in series with a battery in three ways as shown. The potential drops 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 2, both p-n junctions are in forward bias and have same resistance. Similarly in circuit 3, both p-n junctions are in reverse bias and have same resistance. Hence, in circuit 2 and 3, the potential drops across the two p-n junctions are equal. Hence, the correction option is [b].

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