Question

The time taken by an AC of $50$ Hz in reaching from zero to its maximum value will be?

Answer 1

$=50Hz$

$I=I$base $0SinWt$

Peak value$I=I$base$\frac{0}{\sqrt{2}}$

$I$ base$\frac{0}{\sqrt{2}}=I$ base $0SinWt$

$I$ base$\frac{0}{\sqrt{2}}SinWt=Sin\frac{\pi }{4}$

$\frac{\pi }{4}=Wt.$

or,

$t=\frac{\pi }{400}$

$=\frac{\pi }{4}\ast 2\pi f=\frac{1}{8}f$

$=\frac{1}{8}\ast 50$

$=0.0025s$

$=2.5ms$