character: Nikola Tesla
topic: Alternating Current vs. Direct Current
grade: 12
subject: Physics
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character: Thomas Edison
topic: Direct Current System
grade: 12
subject: Physics
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character: George Westinghouse
topic: Adoption of Alternating Current
grade: 12
subject: Physics
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character: Michael Faraday
topic: Principles of Electromagnetism
grade: 12
subject: Physics
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