Consider the circuit shown below, where the switch has been open for quite sometime, but closes at t=0. Using circuit analysis techniques find: \text { - } \mathrm{i}_{L}(0-), \text {

the initial value of the inductor current just before the switch closes } \text { - } \tau \text {, the time constant for inductor current; } \text { - } \mathrm{I}_{L}(\mathrm{t}), \text { an expression for the inductor current; } \text { - Voil }(t) \text {. an expression for the voltage across the load resistor, } R_{L} \text {. } the energy dissipated by the resistor, R for t2 0.