Q$2$: Laplace Transform: Switch closes at time $\backslash (\backslash$mathrm$\{$t$\}=0\backslash$mathrm$\{$~s$\}\backslash )$ after being open for a very long time.

$($a$)$ Write a sec

e above circuit.

$[5]$

$($b$)$ Derive an expression for I$($s$)$ using Laplace transforms