In an RC parallel circuit, E_T = 120 V, R = 40 Ω , and X_C = 30 Ω . What is the power factor? A) 60% B) 80% C) 100% D) 133%

Name: In an RC parallel circuit, E T = 120 V, R = 40 Ω , and X C = 30 Ω . What is the power factor? A) 60% B) 80% C) 100% D) 133%
Brand: Quizplus
Rating: 4.9 (35 reviews)

Question

Quizplus · Accepted Answer

The power factor is given by cos(θ), where θ is the phase angle between the voltage and current. In a parallel circuit, the phase angle is given by tan(θ) = X_C/R. Therefore, cos(θ) = R/√(R² + X_C²) = 40/√(40² + 30²) = 0.8, or 80%.

In an RC Parallel Circuit, ET = 120 V, R

In an RC Parallel Circuit, E_T = 120 V, R