Power Consumed in AC Circuit – Rankers Physics

Power in AC Circuits: Practice Problem & Solution

Power consumed in A.C circuit is zero then the ac source could be connected to
Resistor only
Inductor only
Capacitor only
Both (2) and (3)

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Power in AC Circuits. Understanding the underlying formula is key to arriving at the correct answer below:

The average power consumed in an AC circuit is given by \( P_{avg} = V_{rms} I_{rms} \cos \phi \). For a purely inductive or purely capacitive circuit, the phase difference \( \phi = 90^\circ \), which makes the power factor \( \cos \phi = 0 \), resulting in zero power consumption.

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