What's the difference between true power and reactive power?

In summary, true power is the actual power used in an electrical circuit, while reactive power is the power absorbed and released by reactive components. True power is measured in watts and reactive power is measured in volt-amperes reactive. The two are related through the power factor, with a high power factor indicating more true power usage and a low power factor indicating more reactive power usage. True power is essential for proper functioning of an electrical system, while reactive power can cause inefficiencies and issues if not properly managed. Examples of devices that use true power include light bulbs, heaters, and electric motors, while devices that use reactive power include transformers, fluorescent lights, and other reactive components.
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what's the difference between true power and reactive power? I'm confused at these 2 terms...
 
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thank you!
 

1. What is the definition of true power and reactive power?

True power, also known as active power, refers to the actual power used to perform work or provide energy in an electrical circuit. Reactive power, on the other hand, refers to the power absorbed and released by reactive components such as inductors and capacitors, but does not actually do any useful work.

2. How are true power and reactive power measured?

True power is measured in watts (W) and is typically represented by the letter P. Reactive power is measured in volt-amperes reactive (VAR) and is represented by the letter Q.

3. What is the relationship between true power and reactive power?

True power and reactive power are related through the power factor, which is the ratio of true power to apparent power (the combination of true and reactive power). A high power factor indicates that a circuit is using more true power, whereas a low power factor indicates that a circuit is using more reactive power.

4. How do true power and reactive power affect electrical systems?

True power is essential for the proper functioning of an electrical system, as it is responsible for performing useful work. Reactive power, on the other hand, can cause inefficiencies and lead to issues such as voltage drops and overheating of equipment if not properly managed.

5. What are some examples of devices that use true power and reactive power?

Devices that use true power include light bulbs, heaters, and electric motors, as they all require energy to perform work. Devices that use reactive power include transformers, fluorescent lights, and other reactive components in electrical systems.

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