A current of $2.0 \mathrm{A}$ is flowing in the given $\mathrm{L}-\mathrm{R}$ circuit. Find the voltage across the $\mathrm{AC}$ source and the impedance of the circuit.

For the given circuit, find (i) the reactance,

For the given circuit, find 
(ii) the impedance,

For the given circuit, find 
(iii) the peak value of current

For the given circuit, find 
(iv) the phase difference between voltage and current, $\left({\tan }^{-1} 1.33=53°\right)$