Question

When the resistance measured between p and n ends of a p-n junction diode is high, it can act as a/an:

• A. resistor
• B. inductor
• C. capacitor
• D. switch

Hint:

A p-n junction diode behaves like a switch when its resistance is high (in the OFF state).

Answer 1

The Correct Option is D

In a p-n junction diode, the behavior between the p and n ends can be understood by analyzing its resistance characteristics. When the resistance is high, the diode is in its "off" state, functioning as an open circuit or a switch that is not conducting. 
In the context of this question, the resistance measurement indicates whether or not current can flow through the diode. A high resistance implies that the diode blocks current flow, akin to an open switch, while low resistance means it allows current, acting like a closed switch.

Thus, when the resistance is high, the p-n junction diode effectively acts as a switch in its "off" position, preventing current from passing through.
Therefore, the correct answer to the question is that the diode acts as a switch when the resistance between the p and n ends is high.