In a circuit, the value of the alternating current is measured by hot wire ammeter as $10$ ampere. Its peak value will be......$A$

In an $ac$ circuit $I = 100\, sin \,200$ $\pi t.$ The time required for the current to achieve its peak value will be

The root mean square value of the alternating current is equal to

$(a)$ 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?

The peak value of an alternating e.m.f. E is given by $E = {E_0}\cos \omega \,t$ is $10\, volts$ and its frequency is $50\; Hz$. At time$t = \frac{1}{{600}}\;sec$, the instantaneous e.m.f. is

The $AC$ voltage across a resistance can be measured using a