Physics – 4.2.2 Electric current | e-Consult
4.2.2 Electric current (1 questions)
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Direct Current (d.c.) involves the flow of electric charge in only one direction. The electrons move consistently from the negative to the positive terminal of a power source. A common application of d.c. is in batteries and electric vehicles.
Alternating Current (a.c.) involves the flow of electric charge that periodically reverses direction. The electrons flow back and forth. A major application of a.c. is in household electricity supply and powering most electrical appliances.