How to calculate real power?
Understand the Problem
The question is asking for the method or formula to calculate real power in an electrical system. Real power is the actual power consumed by a circuit, measured in watts, and it can be calculated using the formula P = VIcos(ϕ), where P is the real power, V is the voltage, I is the current, and ϕ is the phase angle between the current and voltage.
Answer
P = I^2 * R or P = V^2 / R
The final answer is P = I^2 * R or P = V^2 / R depending on the given parameters.
Answer for screen readers
The final answer is P = I^2 * R or P = V^2 / R depending on the given parameters.
More Information
Using the real power formulas allows you to determine the actual power being dissipated in the circuit, measured in watts.
Tips
Common mistakes include using the incorrect formula or misinterpreting the given parameters. Always ensure that you have identified whether the given values are for current or voltage before applying the respective formula.
Sources
- Real, Reactive, and Active Power - kirkwood.pressbooks.pub
- True, Reactive, and Apparent Power - All About Circuits - allaboutcircuits.com
