A resistance R draws power P when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes Z , the power drawn will be:NE

Question

A resistance R draws power P when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes Z , the power drawn will be:NEET 2015 (Phase 1)

TestHub · Accepted Answer

We know P = V 2 R ; P ′ = V . V z cos ⁡ Φ V 2 = P R & cos ⁡ Φ = R z P ′ = V 2 z R z ⇒ P R z 2 R = P R 2 z 2 = P R z 2

Physics - EMI/AC Question with Solution | TestHub

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