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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
In a $PN-$junction diode
  • ✓
    The current in the reverse biased condition is generally very small
  • B
    The current in the reverse biased condition is small but the forward biased current is independent of the bias voltage
  • C
    The reverse biased current is strongly dependent on the applied bias voltage
  • D
    The forward biased current is very small in comparison to reverse biased current
✓

Answer

Correct option: A.
The current in the reverse biased condition is generally very small
a
(a)In forward biased $PN-$junction, external voltage decreases the potential barrier, so current is maximum. While in reversed biased $PN-$junction, external voltage increases the potential barrier, so the current is very small.

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