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12th Class Physics Semiconducting Devices Question Bank Semiconducting Devices Conceptual Problems

  • question_answer
    In only one of the circuits given in Fig. the lamp L lights. Which circuit is it? Give reason for your answer.                

    Answer:

                        The lamp L lights up only in the circuit of Fig. (b) because in this circuit, the input circuit is forward biased and the output circuit is reverse biased.


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