SemiconductorEasy
Question
When a potential difference is applied across, the current passing through
Options
A.an insulator at 0 K is zero
B.a semiconductor at 0 K is zero
C.a metal at 0K is finite
D.a p-n diode at 300 K is finite, if it is reverse biased
Solution
At 0 K a semiconductor becomess a perfect insulator. Therefore, at 0 K, if some potential difference is applied across an insulator of semiconductor, current is zero. But a conducter will becomes a super conductors at 0 K. Therefore, current will be finite. In reverse biasing at 300 K through a p-n junction diode, a small finite current flows due to minority charge carriers.
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