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20.11 Power in an a.c. circuit

 

The Woffram Demonstration Project illustrates much of the material in this section.
It starts with the current exactly in phase with the voltage (power factor = 1). You can use the slider to change the phase angle and observe the corresponding instantaneous power.
Woffram Demonstration Project

 

Understanding Physics

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Mansfield and O'Sullivan, Understanding Physics, 3rd ed., John Wiley & Sons, Chichester (2020),

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