diffrences b/w ac current and dc current
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AC current rotates it's direction .while DC current is unidirectional .
transmission of DC current is very costly as much of the energy is lost but in the case of AC current is least energy is lost
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AC current : A current whose direction changes after equal intervals of time and whose magnitude changes continuously is called AC current.
DC current: A current which do not change its direction and flows with constant magnitude is called DC current
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