NEET Physics Power in AC Circuits MCQ Question
In a diagram of a series RLC circuit connected to an AC source, the voltage across the resistor is labeled as V_R, the voltage across the inductor as V_L, and the voltage across the capacitor as V_C. Which of the following represents the correct formula for the average power (P) dissipated in the circuit?
P = V * I * cos(φ)
P = V * I * sin(φ)
P = V * I * tan(φ)
P = V * I / cos(φ)
Correct Answer
Detailed Explanation
The average power dissipated in an AC circuit is given by the formula P = V * I * cos(φ), where φ is the phase difference between the current and voltage.
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