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Question

A series circuit consists of an $\mathrm{AC}$ generator with an runs voltage of $120 \mathrm{~V}$ at a frequency of $60.0 \mathrm{~Hz}$ and a magnetic buzzer with a resistance of $100 \Omega$ and an inductance of $100 \mathrm{mH}$.

(a) Find the circuit's power factor.

(b) Suppose a higher power factor is desired. Can a power factor of $1.00$ be achieved by changing the inductance or any other circuit parameters?

(c) Show that a power factor of $1.00$ can be attained by inserting a capacitor into the original circuit, and finding the value of its capacitance.

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

Step 1

1 of 5### Knowns,&,Concept

Series $RLC$ circuit contains resistance $R=100\,\Omega$, inductance $L=100\,\text{mH}$ and source $\Delta V_{rms}=120\,\text{V}$, $f=60\,\text{Hz}$.

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