A direct current of $5\,A$ is superposed on an alternating current $I =10 \sin \omega t$ flowing through the wire. The effective value of the resulting current will be
$(15 / 2)\,A$
$5 \sqrt{3}\,A$
$5 \sqrt{5}\,A$
$15\,A$
The charge in an $LC$ circuit with negligible resistance oscillates as given by equation $\frac{{{d^2}q}}{{d{t^2}}} + 16{\pi ^2}q = 0$. If the charge is maxiumum equal to $24\,\mu C$ at $t = 0$, find the charge at $t = \frac{1}{{12}}\,s$............$\,\mu C$
If the value of potential in an $ac$, circuit is $10V$, then the peak value of potential is
The voltage of an ac source varies with time according to the equation $V = 100\sin \;100\pi t\,\cos \,100\pi t$ where $t$ is in seconds and $V$ is in volts. Then
The frequency of an alternating voltage is $50$ cycles/sec and its amplitude is $120\,V$. Then the $ r.m.s$. value of voltage is........$V$
What is the maximum voltage of $220\, V$ ?