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Most commercial electric power plants generate electricity based on a principle discovered by Michael Faraday. What is this principle called?
ANuclear fission chain reaction
BElectromagnetic induction
CPhotovoltaic conversion effect
DThermal expansion of gases
Answer & Solution
Correct answer: B. Electromagnetic induction
1. Faraday found that a changing magnetic field around a conductor creates a potential difference across it.
2. This is the principle of electromagnetic induction.
3. Generators in power plants work on exactly this principle.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 5 "Towards Green Energy", p.56_
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