the reason why do we preferred an $a.c.$ voltage instead of $d.c.$ voltage.
The ratio of peak value and r.m.s value of an alternating current is
What are $DC$ signals and $AC$ signals ? Why do we preferred an $AC$ signal ?
If an alternating voltage is represented as $E = 141\,sin\, (628\,t),$ then the rms value of the voltage and the frequency are respectively
An alternating voltage is represented as $E = 20\,sin \,300t.$ The average value of voltage over one cycle will be.......$V$
In general in an alternating current circuit