Draw time-current $\left(\mathrm{t}-\mathrm{I}\right)$ and time-voltage $\left(\mathrm{t}-\mathrm{V}\right)$ graphs for an $\mathrm{L}-\mathrm{R}$ circuit, showing the phase difference between the current and the voltage.

In Fig. (a), (b) and (c) are shown three $\mathrm{AC}$ circuits with equal currents. If the frequency of emf be increased, then what will be the effect on the currents in these? Explain with reasons.

In Fig. (a), (b) and (c) are shown three $\mathrm{AC}$ circuits with equal currents. If the frequency of emf be increased, then what will be the effect on the currents in these? Explain with reasons.

In Fig. (a), (b) and (c) are shown three $\mathrm{AC}$ circuits with equal currents. If the frequency of emf be increased, then what will be the effect on the currents in these? Explain with reasons.