Which of the following is not a source of power?
Correct answer: A. Thermocouple
- A. Thermocouple
- B. Photovoltaic cell
- C. Solar cell
- D. Photoelectric cell
Explanation
A thermocouple mainly converts a temperature difference into a small voltage for measurement, rather than serving as a practical power source. Photovoltaic, solar, and photoelectric cells convert light energy into electrical energy.
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