A reverse-biased semiconductor diode acts as:
Correct answer: D. Off switch
- A. Rectifier
- B. On switch
- C. Inverter
- D. Off switch
- E. Amplifier
Explanation
A reverse-biased semiconductor diode can be thought of as an off switch because it prevents current from flowing through the circuit, similar to an open switch. Only a very small leakage current passes through until the breakdown voltage is exceeded.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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