Extra exam question E6F04
Subelement E6, CIRCUIT COMPONENTS· Group E6F
E6F04
What is the photovoltaic effect?
- A.The conversion of voltage to current when exposed to light
- B.The conversion of light to electrical energy (correct answer)
- C.The effect that causes a photodiode to emit light when a voltage is applied
- D.The effect that causes a phototransistor’s beta to decrease when exposed to light
WhyThe photovoltaic effect is the conversion of light to electrical energy. The photovoltaic effect is the direct conversion of light into electrical energy, the fundamental process solar cells use to generate power from sunlight, answer B. It isn't a conversion from voltage to current, isn't a description of a photodiode emitting light (that's closer to how an LED works), and isn't a description of beta changing in a phototransistor, those are different, unrelated effects.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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