Physics · AC Circuits
In a single phase AC circuit supplied with a voltage V and drawing a current I, if φ is the phase angle between V and I, what is the expression for real power P consumed by the circuit?
- 1P = VI sin(φ)
- 2P = 3VI sin(φ)
- 3P = VI cos(φ)✓
- 4P = √3 VI sin(φ)
Correct answer
P = VI cos(φ)
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