Question
What is the approximate open-circuit voltage produced by a fully illuminated silicon photovoltaic cell?
Answer Options
- A) 0.5 volts
- B) 0.7 volts
- C) 1.1 volts
- D) 1.5 volts
Correct Answer: A
Explanation
The open-circuit voltage (V_{OC}) of a photovoltaic cell is the maximum voltage produced by the cell when no current is flowing through the external circuit. This voltage is determined by the semiconductor material’s bandgap energy and the solar cell’s construction.
For a standard, fully illuminated silicon photovoltaic cell, the approximate open-circuit voltage produced is about 0.5 volts. While this voltage is low, multiple cells are wired in series to create a solar panel (module) that produces a useful voltage (e.g., 12 \text{ V} or 24 \text{ V}) for battery charging or power generation.
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