character: Nikola Tesla
topic: Alternating Current and Electric Power Systems
grade: 8
subject: Social Studies
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character: Thomas Edison
topic: Direct Current vs. Alternating Current
grade: 8
subject: Social Studies
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character: George Westinghouse
topic: Battle of the Currents
grade: 8
subject: Social Studies
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character: James Watt
topic: Inventions in Electricity
grade: 8
subject: Social Studies
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