An $AC$ voltage source of $E = 150 \sin(100t)$ is used to run a device which offers a resistance of $20 \,\Omega$ and restricts the flow of current in one direction only. The $r.m.s.$ value of current in the circuit will be.....$A$

The effective current $I$ in the given circuit at very high frequencies will be $.......A$

In an $A.C.$ circuit,the current:

Given below are two statements:
Statement $I$: An $AC$ circuit undergoes electrical resonance if it contains either a capacitor or an inductor.
Statement $II$: An $AC$ circuit containing a pure capacitor or a pure inductor consumes high power due to its non-zero power factor.
In the light of the above statements,choose the correct answer from the options given below:

$A$ coil has inductance of $0.4 \text{ H}$ and resistance of $8 \Omega$. It is connected to an $AC$ source with peak emf $4 \text{ V}$ and frequency $\frac{30}{\pi} \text{ Hz}$. The average power dissipated in the circuit is (in $\text{ W}$)

In the shown $AC$ circuit,the phase difference between currents $I_1$ and $I_2$ is: