The ____ of angle theta is the power factor.
A) sine
B) cosine
C) tangent
D) cotangent

Question

Quizplus · Accepted Answer

The cosine of angle theta is equal to the ratio of the adjacent side to the hypotenuse in a right triangle. In AC circuits, the power factor is the ratio of the real power (the power consumed by the circuit) to the apparent power (the product of voltage and current). The real power is equal to the product of the voltage, current, and cosine of the phase angle between them. Therefore, the cosine of the phase angle (theta) is equal to the power factor.

The ____ of Angle Theta Is the Power Factor