When a potential difference is applied across, the current passing throughA. an insulator at 0 K is zeroB. a semiconductor at 0 K is zeroC. a metal at 0 K is zeroD. a reverse biased p-n junction diode at 300 K is finite

When a potential difference is applied across, the current passing thr

1.	When a potential difference is applied across, the current passing throughA. an insulator at 0 K is zeroB. a semiconductor at 0 K is zeroC. a metal at 0 K is zeroD. a reverse biased p-n junction diode at 300 K is finite
Answer» Correct Answer - C At OK, if the same P.D. is applied across an insulator or a semiconductor the current is zero. (The semiconductor also becomes a perfect insulator at OK.) Similarly, in the reverse biased p-n junction diode, a small current flows due to minority charge carriers. Thus (a), (b), (d) are correct. But (c) is wrong because at OK, a conductor becomes a super conductor and the current in it is very large (infinite).

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When a potential difference is applied across, the current passing throughA. an insulator at 0 K is zeroB. a semiconductor at 0 K is zeroC. a metal at 0 K is zeroD. a reverse biased p-n junction diode at 300 K is finite

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