Concept:Reversing the physical orientation of a diode inverts the conduction polarity, making it forward biased during the negative half-cycle of the AC supply.
Formula:Qualitative concept / No formula required.
Solution:- When the AC input goes negative, the AC terminal becomes negative relative to ground.
- Because the cathode is connected to this negative terminal, the diode becomes forward biased and conducts.
- During positive half-cycles, the cathode is at a positive potential, reverse biasing the diode and blocking current.
Why other options are incorrect:- Option B: This corresponds to standard forward diode orientation.
- Option C: A single diode cannot conduct across both half-cycles.
- Option D: The diode conducts during the alternate half-cycle.
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