Mains electricity

https://www.wikidata.org/wiki/Q387400

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Physics 33M papers	Engineering 25M papers	Quantum mechanics 13.3M papers	Thermodynamics 5.1M papers
Electrical engineering 4.8M papers	Power (physics) 2.5M papers	Voltage 1.6M papers
Current
Mains electricity 16.5k papers
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Mains hum 0 papers

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