In the circuit shown, The switch $S_1$ is close at time $t = 0$ and the switch $S_2$ is kept open. At some later time $(t_0)$ the switch $S_1$ is opened and $S_2$ is closed. The behaviour of the current $I$ as a function of time $‘t’$ is given by

An alternating voltage is connected in series with a resistance $R$ and an inductance $L$ If the potential drop across the resistance is $200\, V$ and across the inductance is $150 \,V,$ then the applied voltage is…….$V$

In an $AC$ circuit the potential differences across an inductance and resistance joined in series are respectively $16\,V$ and $20\,V$. The total potential difference of the source is……….$V$

In a $ac$ circuit of capacitance the current from potential is

Discuss power in $AC$ circuit containing only capacitor.