Question:
Resistance of an ideal diode during reverse biasing is
Resistance of an ideal diode during reverse biasing is
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Ideal Diode Characteristics. Acts as a perfect conductor (zero resistance) when forward biased and a perfect insulator (infinite resistance) when reverse biased.
Updated On: May 6, 2025
- Zero
- Unity
- Finite
- Infinite
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The Correct Option is D
Solution and Explanation
An ideal diode is a theoretical model used for simplifying circuit analysis
It has two modes of operation:
(1) Forward Bias: When the voltage across the diode is positive (anode positive relative to cathode), it acts like a closed switch (short circuit) with zero resistance, allowing infinite current flow with zero voltage drop
(2) Reverse Bias: When the voltage across the diode is negative (anode negative relative to cathode), it acts like an open switch (open circuit) with infinite resistance, allowing zero current to flow regardless of the reverse voltage magnitude
Therefore, the resistance of an ideal diode during reverse biasing is infinite
It has two modes of operation:
(1) Forward Bias: When the voltage across the diode is positive (anode positive relative to cathode), it acts like a closed switch (short circuit) with zero resistance, allowing infinite current flow with zero voltage drop
(2) Reverse Bias: When the voltage across the diode is negative (anode negative relative to cathode), it acts like an open switch (open circuit) with infinite resistance, allowing zero current to flow regardless of the reverse voltage magnitude
Therefore, the resistance of an ideal diode during reverse biasing is infinite
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