Set up a resistor-inductor circuit driven by a unit step to show t<0 and t>0 behavior, with initial current from the 50 volt source and gradual rise after turn-on.

Determine the inductor current as t approaches infinity with both sources on, treating the inductor as a short and using Ohm's law to reach 50 amps.

Zero the sources; resistance seen by the inductor is 1.5 Ω from 2 Ω and 6 Ω in parallel, so tau = 3 H / 1.5 Ω = 2 s.

Select the final equation and plug values to compute inductor current, starting at 25 A, ending at 50 A, with a 2 s time constant under a step input.

Apply v = L di/dt to determine the voltage across an inductor from the current’s rate of change. The lecture demonstrates slope-based calculations for voltage drops across inductors.

Explore how energy stored in an inductor follows E = 1/2 L I^2, with current through the inductor determining the stored energy as time goes to infinity.

Apply the step function to on/off sources, compute inductor voltage from current, and show capacitors invert these ideas, with voltage that cannot change instantly.