Which one the following is NOT an example of electrochemical cell
Correct answer: B. Photovoltaic cell
- A. Electrolytic cell
- B. Photovoltaic cell
- C. None of these
- D. Voltaic cell
Explanation
This option is correct. A photovoltaic (PV) cell, or solar cell, is a device that converts light energy directly into electricity through the photovoltaic effect. It typically consists of semiconductor materials, like silicon, that absorb photons from sunlight, generating electron-hole pairs. When these charge carriers are separated by an internal electric field, they produce a flow of electric current. PV cells are the fundamental building blocks of solar panels used in renewable energy systems.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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