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Can you explain the difference between direct and alternating current?

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Can you explain the difference between direct and alternating current? 

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 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. 

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