In the circuit shown, the switch S_ 1 is closed at time t=0 and the...

In the circuit shown,
In the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0

the switch

S_{1}

is closed at time

t=0 and the switch

S_{2}

is kept open. At some later time \left(\mathrm{t}_{0}\right)

, the switch

\mathrm{S}_{1}

is opened and

\mathrm{S}_{2}

is closed. the behaviour of the current I as a function of time '

\mathrm{t}

' is given by:

Options

A. The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is:

The current will grow for the time

\mathrm{t}=0

\mathrm{t}=\mathrm{t}_{0}

and after that decay of current takes place.
Growth and decay of current is of exponential nature

\mathrm{i}=\mathrm{i}_0\left(1-\mathrm{e}^{-\mathrm{t} / \mathrm{\tau}}\right) \rightarrow \text{ during growth }

\mathrm{i}=\mathrm{i}_{\max } \mathrm{e}^{-\mathrm{t} / \mathrm{\tau}} \rightarrow \text{ during decay }