Concept:A semiconductor diode is a two-terminal device where the terminal attached to the P-type region is designated as the anode, and the terminal attached to the N-type region is designated as the cathode.
Formula:$$\text{Diode Terminals: } \text{P-region} \longleftrightarrow \text{Anode } (A), \quad \text{N-region} \longleftrightarrow \text{Cathode } (K)$$
Solution:- By standard convention, current enters the diode via the anode (P-side) and exits via the cathode (N-side) during forward bias conduction.
- The schematic diode symbol consists of an arrow pointing from Anode (P) to Cathode (N), indicating the direction of conventional forward current.
Why other options are incorrect:- Option B: This reverses the correct terminal assignments.
- Option C: Emitter and Collector are terminals of a bipolar junction transistor (BJT).
- Option D: Gate and Drain are terminals of a field-effect transistor (FET).
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