MCQ
$p-n$ junction diode acts as:
- Aohmic resistance
- ✓non$-$ohmic resistance
- Cboth $A$ and $B$
- Damplifier
✓
Answer
Correct option: B.
non$-$ohmic resistance
We know that in the case of metallic conductors, the potential difference varies in direct proportion to the current flowing. The $I−V$ graph of a ohmic conductor is a straight line. But, a $p-n$ junction diode is not in according with Ohm's law. The current voltage characteristic curve of a $p-n$ junction diode shows both forward bias as well as reverse bias characteristics as shown as in the graph.
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