Alternating current – wikipedia, Alternating current (ac) is an electric current which periodically reverses direction, in contrast to direct current (dc) which flows only in one direction.alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen.
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Vol. – direct current (dc) – electronics textbook – circuits, Modern life could not exist if it were not for electricity and electronics. the history of electricity starts more than two thousand years ago, with the greek philosopher thales being the earliest known researcher into electricity. but it was alessandro volta who created the most common dc power.
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