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CBSE Class 12-science Answered

Instantaneous EMF of A.C source is given by E=300 sin314t.What is the value of Erms?
Asked by Anshul | 14 Aug, 2017, 09:16: PM
answered-by-expert Expert Answer
- If the instantaneous EMF of A.C source is given by E=300 sin314t
- Then the value of Erms is
begin mathsize 12px style straight E equals straight E subscript 0 Sinwt Thus space by space coparing space with space straight E equals 300 space sin 314 straight t straight E subscript 0 equals 300 space straight V space and space straight w equals 314 space Hz straight E subscript rms equals fraction numerator straight E subscript 0 over denominator square root of 2 end fraction equals fraction numerator 300 over denominator square root of 2 end fraction equals 212.164 space straight V end style
-  Therefore, the value of Erms  is 212.164 V
 
 
Answered by Abhijeet Mishra | 15 Aug, 2017, 06:30: PM

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