Passage: 'Solar panels convert sunlight directly into electricity using materials called semiconductors. When sunlight strikes the panel, it knocks electrons loose, creating a flow of current. Because sunlight is free and does not produce greenhouse gases during operation, solar energy is considered a clean source of power. One limitation is that panels produce less electricity on cloudy days and none at night, so many systems include batteries to store extra energy.' According to the passage, what happens when sunlight strikes a panel?
Answer and explanation
Correct answer: C. Electrons are knocked loose and create current
The text states that electrons are knocked loose, creating current.
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