If the voltage v = 50 sin500t - 75° is applied across a 25 Ω resistor, which equation describes the resistor current?
A) 2 sin500t - 75°
B) 2 sin20t - 3°
C) 2 cos500t - 75°
D) 1250 sin500t - 75°

Question

Quizplus · Accepted Answer

The current through a resistor is given by Ohm's Law, I = V/R. Given V = 50 sin(500t - 75°) and R = 25 Ω, the current I = (50/25) sin(500t - 75°) = 2 sin(500t - 75°), which matches option A.

If the Voltage V = 50 Sin500t - 75° Is