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Physics
For a given AC source the average-emf during the positive half cycle.
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Q. For a given AC source the average-emf during the positive half cycle.
Alternating Current
A
depends on $E_0$
21%
B
depends on shape of wave
12%
C
both 1 and 2
36%
D
depends only on peak value of $E_0$
31%
Solution:
$E_{av}=\frac{2E_0}{T}\int^{t/2}_0$ sin$(\omega\,t)dt=\frac{2E_0}{\pi}$