What is the speed of electric current?

DWQA Questions › Category: General Electrical › What is the speed of electric current?

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Dilshan asked 7 years ago

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How Engineering Works Staff answered 7 years ago

299,792,458 meters per second.

Electromagnetic waves propagate in vacuum at a maximum speed of 299,792,458 meters per second . For a 12-gauge copper wire carrying a 10-ampere DC current, the speed of electric current (average electron drift velocity) is about 80 centimeters per hour or about 0.0002 meters per second.