Question

Distinguish between the following: Direct current and Alternating current.

Answer 1

Sr.No.	Direct current	Alternating current
1	D.C flows in one direction in the circuit	A.C reverses its direction while flowing in the circuit.
2	The frequency of the direct current is zero.	The frequency of alternating current is 50Hz or 60Hz depending on the country.
3	For eg: Current from Cell or Battery.	For eg: Current from A.C Generator and mains.
4	The voltage of DC cannot travel very far until it begins to lose energy.	Safe to transfer over longer city distances
5	Electrons move steadily in one direction.	Electrons keep changing directions.
6	It is the current of constant magnitude.	Magnitude of current varies with time in A.C