What is $rms$ ? Write the formula of $rms $ for 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 circuit, the value of the alternating current is measured by hot wire ammeter as $10$ ampere. Its peak value will be......$A$
What is the sum of the instantaneous current values over one complete $AC$ cycle ?
The $AC$ voltage across a resistance can be measured using a
The current flowing through an ac circuit is given by
$I=5 \sin (120 \pi t) A$
How long will the current take to reach the peak value starting from zero?