Electrical Engineering XYZ MCQs
The PN junction diode has two terminals. The P-terminal is known as:
- Cathode
- Anode
- Either of above
- None of these
Correct answer: 2. Anode
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Explanation:
In a PN junction diode, one side is doped with a higher concentration of acceptor impurities (the P-side) while the other side is doped with a higher concentration of donor impurities (the N-side). When these two sides are brought together, a junction is formed, hence the name PN junction.
In a diode, the P-side is typically connected to the positive terminal of the voltage source, while the N-side is connected to the negative terminal. This makes the P-side the positive terminal or the anode. Conversely, the N-side is the negative terminal or the cathode.
So, the P-terminal in a PN junction diode is known as the anode. Therefore, the correct answer is “Anode”.