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urgent
Asked by pritam | 08 Sep, 2010, 11:45: AM
answered-by-expert Expert Answer
freuency = 1/Time period.
In one time period current changes direction only once.(from +ve to -ve).
T=1/50
 =.02 sec.
so 1 sec=50 T
=> current changes its direction 50 times.
Answered by | 08 Sep, 2010, 09:59: PM

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