The input voltage jumps at time t $=0$ from the constant value

V$\_$IN$,$ Before $=6\mathrm{.}3$ volts

to the constant value$$

V$\_$IN$,$ After $=-20$ volts.

Before the jump of the input voltage, the circuit has reached its DC steady$-$state condition.$$

The circuit components are:$$

Resistance R $=12\mathrm{.}8$ k$$

Inductance L $=7$ mH$$

Calculate the power PL $$in mW$,$ which is absorbed by the inductor right after the jump of the input voltage.

Calculate the amplitude in dBV of the $5-$th peak in its spectrum within $+/-0\mathrm{.}1$ dB$.$