Assertion : Ohm’s law cannot be applied to $a.c$ circuit.

Reason : Resistance offered by capacitor for a.c source depends upon the frequency of the source.

The phase difference between the voltage and the current in an ac circuit is $\pi /4$. If the frequency is $50\, Hz$ then this phase difference will be equivalent to a time of

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

The voltage of an $ac$ supply varies with time $(t)$  as $V = 120\sin 100\,\pi \,t\cos 100\pi \,t.$ The maximum voltage and frequency respectively are

An alternating voltage $v\left( t \right) = 220\,\sin \,100\pi l\,volt$ is applied to a purely resistive load of $50\,\Omega $ . The time taken for the current to rise from half of the peak value of the peak value is.....$ms$

The voltage of an $ac$ source varies with time according to the equation $V = 100\sin \,\left( {100\pi t} \right)\cos \,\left( {100\pi t} \right)$ where $t$ is in seconds and $V$ is in volts. Then