What will be $r.m.s.$ value of given $A.C.$ over one cycle.
${V_0}$
$\frac{{{V_0}}}{{\sqrt 2 }}$
$\frac{{{V_0}}}{2}$
$\frac{{{V_0}}}{4}$
$(a)$ The peak voltage of an $ac$ supply is $300\; V$. What is the $rms$ voltage?
$(b)$ The $rms$ value of current in an ac circuit is $10\; A$. What is the peak current?
An alternating voltage $\mathrm{V}(\mathrm{t})=220 \sin 100 \ \pi \mathrm{t}$ volt is applied to a purely resistive load of $50\ \Omega$. The time taken for the current to rise from half of the peak value to the peak value is:
In a certain circuit current changes with time according to $i = 2\sqrt t .$ r.m.s. value of current between $t = 2$ to $t = 4s$ will be
What are $AC$ voltage ? Write the equation for $ac$ voltage.
If instantaneous current is given by $i = 4\cos \,(\omega \,t + \phi )$ amperes, then the $r.m.s$. value of current is