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CBSE Class 10 Answered

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Asked by kirtichawla94 | 15 Jul, 2009, 06:42: PM
answered-by-expert Expert Answer

The current which changes its polarity after regular intervals of time is called alternating  current (AC).

The current which does change its polarity with time and always remains constant with time is direct current (DC).

Answered by | 16 Jul, 2009, 06:48: PM
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