Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

$\bullet$ In a series $R-L-C$ circuit, $R=300 \Omega, X_{C}=300 \Omega,$ and $X_{L}=500 \Omega .$ The average power consumed in the resistor is 60.0 $\mathrm{W}$ . (a) What is the power factor of the circuit? (b) What is the rms voltage of the source?

a) $\cos \phi=0.832$b) $V_{\mathrm{ms}}=176.6 \mathrm{V}$

Physics 102 Electricity and Magnetism

Chapter 22

Alternating Current

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Cornell University

Simon Fraser University

Hope College

McMaster University

Lectures

04:44

Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug electrical appliances into a wall socket. A common source of DC power is a battery cell in a flashlight. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.

11:31

In electrical engineering, a direct current (DC) circuit is an electrical circuit operating with a constant voltage (or current), as opposed to alternating current (AC) circuits. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams.

02:39

In an $L-R-C$ series circu…

0:00

In aseries R-L-C c…

03:53

A circuit consists of a re…

02:22

An $L-R-C$ series circuit …

03:15

In a certain series $R L C…

02:19

to get the power factor of the circuit. We're going to need the impudence of circuit to get the impudence of circuit. We're going to use this formula here. Impedance is equal to the square of our squared, plus the difference in react, Ince's square and we know what everything on the right hand side is. It's all given the problem so we can plug it all in and sell for the impedance to get 361 homes. And so now we can use the formal for the power factor, which is the resistance over the impedance. The resistance is given in the problem and the impedance we just found. And so the power factors, Eagle says. You're appointing through one and that's answer party for Part B. We're going to use the formula that the power is equal to the R. M s current school here. Tens of resistance. Let's solve this for the Army's current. I get this very of power over their resistance, and so now we complying with the power isn't going in with the resistance is to get the army's current, and it's you're a 0.447 camp ears and so now that we know that we can figure out what the Army's voltages by using this formula, we figured out what the impedance was here, and we just figured out what the Army's current is here. And so I complied all of that and to get 161 bolts, which is the Armas voltage, and that completes the problem.

View More Answers From This Book

Find Another Textbook

04:10

A technician measures the specific heat capacity of an unidentified liquid b…

02:07

$\bullet$ A positively charged rubber rod is moved close to a neutralcop…

04:20

A scientific instrument that weighs 85.2 $\mathrm{N}$ on the earth weighs 32…

03:11

Planet $\mathbf{X} !$ When venturing forth on Planet $X,$ you throw a 5.24 k…

03:40

Suppose now that you exert an upward force of magnitude 5 $\mathrm{N}$ on th…

04:35

A 5.00 pF parallel-plate air-filled capacitor with circular plates is to be …

02:00

A hockey puck with mass 0.160 $\mathrm{kg}$ is at rest on the horizontal, fr…

01:59

By how much does middle $\mathrm{C}$ on the violin changeA. There is no …

01:57

A healthy heart pumping at a rate of 72 beats per minute increases the speed…

00:53

(II) Estimate the number of liters of water a human drinks in a lifetime.