Problem

The voltage across a 20 Ω resistor is as indicated. Find the sinusoidal expression for the...

The voltage across a 20 Ω resistor is as indicated. Find the sinusoidal expression for the current. In addition, sketch the ʋ and i sinusoidal waveforms on the same axis.

a. 160 sin 100t

b. 60 sin(2000t + 45°)

c. 6 cos(ωt + 10°)

d. –12 sin(ωt + 40°)

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