$30\mathrm{.}30..$ Consider the circuit in Exercise $30\mathrm{.}23.($a$)$ Just after the circuit is completed, at what rate is the battery supplying electrical energy to the circuit? $($b$)$ When the current has reached its final steady$-$state value, how much energy is stored in the inductor? What is the rate at which electrical energy is being dissipated in the resistance of the inductor? What is the rate at which the battery is supplying electrical energy to the circuit?