| Assertion (A): Ideal diode shows zero resistance in forward bias and infinite resitance in reverse bias. |
| Reason (R): Depletion region of a p-n junction diode extends in reverse bias and contracts in reverse bias. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: A
Solution :
| Option [a] is correct. |
| Explanation: In forward bias condition, the depletion region of a p-n junction diode contracts and the majority charge carriers can cross the junction very easily. So, the resistance becomes low (ideally 0). |
| In reverse bias condition, the depletion region of p-n junction diode expands and the majority charge carriers cannot cross the junction. So, the resistance increases (ideally \[\infty \]). |
| So, the assertion and reason both are true and reason explains the assertion. |
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