A 40 Ω Resistor, a 5mH inductor, and a 1.25μF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos(8000t + 20°) V.
a) Draw the frequency-domain equivalent circuit.
b) Reference the current in the direction of the voltage rise across the source, and find the phasor current.
c) Find the steady-state expression for i(t).