What are the fundamentals of the power triangle?

Question

Accepted Answer

The power triangle represents the relationship between real power, reactive power, and apparent power in an AC circuit.

The power triangle is a visual representation of the relationship between real power (P), reactive power (Q), and apparent power (S) in an AC circuit.
Real power (P) is the actual power consumed by the circuit and is measured in watts (W).
Reactive power (Q) is the power that flows back and forth between the source and the load due to inductive or capacitive elements in the circuit, and is measured in volt-amperes reactive (VAR).
Apparent power (S) is the vector sum of real power and reactive power, and is measured in volt-amperes (VA).
The power triangle shows the relationship between these three powers, where the real power is the horizontal component, the reactive power is the vertical component, and the apparent power is the hypotenuse of the triangle.

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