The switches in figure (a) and (b) are closed at t = 0 and reopened after a long time at t = t0.


Formula used:

The charge on capacitor at time t, when the switch is closed is



Where Q is the Charge


is the emf


T is the Time period


R is the Resistance


C is the Capacitance


At t=0, the charge on the capacitor is



After a long time , the charge on the capacitor is




The current in inductor L is given by



Where I is the current


is the voltage or potential difference


R is the Resistance


L is the inductance


T is the time period


At initial we take, t=0, the current in the inductor is given by




After a long time = is





The charge on C long after t=0 is


The current in L long after t = t0 is

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