Question

The instantaneous value of emf is given by e = 300 Sin 3141. What is
the rms value of emf?​

Answer 1

Answer:

Erms=212.164V

Explanation:

If the instantaneous EMF of A.C source is given by E=300 sin314t

Then the value of Erms is

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