________________ cells converts solar energy into electrical energy?
Correct answer: B. photovoltaic
- A. rotory
- B. photovoltaic
- C. galvanic
- D. non of these
Explanation
Photovoltaic cells convert sunlight directly into electrical energy through the photovoltaic effect in a semiconductor junction. Galvanic cells, the likely mistaken choice, convert chemical energy into electrical energy rather than solar energy.
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About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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