Question

p-n junction diode acts as

• A. ohmic resistance
• B. non-ohmic resistance
• C. both A and B
• D. amplifier

Answer 1

The correct option is 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.