character: Thomas Edison
topic: Alternating vs. Direct Current
grade: 9
subject: Physics
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character: Nikola Tesla
topic: Alternating Current Development
grade: 9
subject: Physics
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character: George Westinghouse
topic: AC vs. DC Debate
grade: 9
subject: Physics
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character: Michael Faraday
topic: Electromagnetic Induction
grade: 9
subject: Physics
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