CBSE Class 10 Answered
plz.........
Asked by kirtichawla94 | 15 Jul, 2009, 06:42: PM
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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