A pure inductance of $1$ henry is connected across a $110 \mathrm{V},70 \mathrm{Hz}$ source. Find

current,

A pure inductance of $1$ henry is connected across a $110 \mathrm{V},70 \mathrm{Hz}$ source. Find

peak value of current.

In the $\mathrm{R}-L$ series circuit the resistance $R=30\Omega ,$ reactance $X_L=40\Omega$ and peak emf $E_0=220 \mathrm{V}.$ Calculate: impedance $z$

In the $\mathrm{R}-L$ series circuit the resistance $R=30\Omega ,$ reactance $X_L=40\Omega$ and peak emf $E_0=220 \mathrm{V}.$ Calculate :

phase difference between emf and current,

In the $\mathrm{R}-L$ series circuit the resistance $R=30\Omega ,$ reactance $X_L=40\Omega$ and peak emf $E_0=220 \mathrm{V}.$ Calculate :

peak current $i_0$ in circuit.