In an series circuit, ,

PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current

Problem

In an LCRLCR series circuit, R=150 ΩR=150\,\Omega, L=0.750 HL=0.750\,\mathrm{H}, and C=0.0180 μFC=0.0180\,\mu\mathrm{F}. The source has voltage amplitude V0=150 VV_0=150\,\mathrm{V} and a frequency equal to the resonance frequency of the circuit. (a) What is the power factor? (b) What is the average power delivered by the source? (c) The capacitor is replaced by one with C=0.0360 μFC=0.0360\,\mu\mathrm{F} and the source frequency is adjusted to the new resonance value. What is the average power delivered by the source?

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