Chapter 14, Problem 9P

The current through a 20 $\Omega$ inductive reactance is given. What is the sinusoidal expression for the voltage? Sketch the u and i sinusoidal waveforms on the same axis.

a. $i=25\times {10}^{-3}\sin 200t$

b. $i=40\times {10}^{-3}\sin (wt+{60}^{\circ })$

c. $i=-6\sin (wt-{30}^{\circ })$