Asked by Vicky Geurinckx on Jun 14, 2024
Verified
In a parallel circuit, ET = 120 V, R = 470 Ω , and XL = 500 Ω . What is the reactive power?
A) 20.98 VARs
B) 28.8 VARs
C) 34.85 VARs
D) 39.64 VARs
Reactive Power
The component of electric power that oscillates between the source and load, associated with the energy stored in the field of an inductor or capacitor.
Inductive Reactance
The opposition that an inductor presents to alternating current, due to the inductor's ability to store energy in a magnetic field.
Parallel Circuit
An electrical circuit in which components are connected across common points or junctions, providing multiple paths for current to flow.
- Compute reactive power in AC circuits configured in parallel and comprehend its importance.
Verified Answer
AC
Anjelique CollinsJun 19, 2024
Final Answer :
B
Explanation :
The reactive power (Q) in a circuit can be calculated using the formula Q = V^2 / X, where V is the voltage across the circuit and X is the reactance. Given V = 120 V and the inductive reactance (XL) = 500 Ω, Q = (120^2) / 500 = 28.8 VARs.
Learning Objectives
- Compute reactive power in AC circuits configured in parallel and comprehend its importance.