The $4\mathrm{.}75$ A current through a $1\mathrm{.}50$ H inductor is dissipated by a $\backslash (2\mathrm{.}10\backslash$Omega $\backslash )$ resistor in a circuit like that in the figure below with the switch in position $2.$

$($a$)$ What is the initial energy $($in J$)$ in the inductor?

J

$($b$)$ How long will it take $($in s$)$ the current to decline to $\backslash (5\mathrm{.}00\backslash \%\backslash )$ of its initial value?

s

$($c$)$ Calculate the average power $($in W$)$ dissipated, and compare it with the initial power dissipated by the resistor.

W

$($ratio of initial power to average power$)$