Question

Write the equation of $25$ cycle current sine wave having rms value of $30A$.

Answer 1

Given,
$\gamma =25Hz$, $I_{rms}=30A$
Now, we know that:
$i=I_0\sin \omega t$
$i=I_{rms}\sqrt{2}\sin 2\pi \gamma t$
$i=30\sqrt{2}\sin 2\pi \times 25t$