character: Thomas Edison
topic: Direct Current vs. Alternating Current
grade: 11
subject: Physics
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character: Nikola Tesla
topic: Alternating Current
grade: 11
subject: Physics
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character: George Westinghouse
topic: AC vs. DC Power Systems
grade: 11
subject: Physics
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character: Michael Faraday
topic: Electromagnetism
grade: 11
subject: Physics
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