Log in
Physics
2
answers
2
watching
1,960
views
30 Oct 2017

31.3. The voltage across the terminals of an ac power supply varies with time according to Eq. (31.1). The voltage amplitude is V = 45.0 V. What are (a) the root-mean-square potential differ- ence Vrms and (b) the average potential difference Vay between the two terminals of the power supply?

word_media_image1.png
Watch
2
answers
2
watching
1,960
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Tod Thiel
Tod ThielLv2
2 Nov 2017
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A real battery is not just an emf, we can model a real 1.5V battery as a 1.5 V emf in series with a resistor known as the internal resistance. A typical battery has 1.0 Ω internal resistance due to imperfections that limit the current through the battery. When there's no current through the battery, and thus no voltage drop across the internal resistance, the potential difference between its terminals is 1.5 V, the value of the emf. Suppose the terminals of this battery are connected to a 3 Ω resistor.

what fraction of the battery's power is dissipated by the internal resistance?

 

In Alternating Current (AC) circuits, oscillations, amplitudes, wavelengths and frequencies are important for current, voltage, resistance, capacitance, power and inductance. Show the relationships between maximal currents, voltages, resistances, and powers, with respect to their individual Root Mean Square (RMS) respectively. Include ranges of current from 1 mA to 100 A, ranges of voltage from 1 mV to 100 V, ranges of resistance between 1 mOhms and 100 Ohms. Show the relevance of an average power. Discuss utilizations of inductors and capacitors in these AC circuits. Show how these relate to a variation of Ohm

To repair a power supply for a stereo amplifier, an electronics technician needs a 100-µF capacitor capable of withstanding a potential difference of 90 V between the plates. The immediately available supply is a box of five 100-µF capacitors, each basing a maximum voltage capability of 50 V.

(a) What combination of these capacitors has the proper electrical characteristics? Will the technician use all the capacitors in the box? Explain your answers. 

(b) In the combination of capacitors obtained in part (a), what will the maximum voltage across each of the capacitors used?

Related Documents

PHYS 102 Lecture Notes - Lecture 7: Electrical Network, Electric Current, Electric Potential
jadebee284
Textbook Guide Physics: Angular Frequency, Propagation Constant, Electrical Resistance And Conductance
grayraven524
PHYS 24100 Chapter Notes - Chapter 24: Farad, Surface Charge, Electrical Breakdown
magentasquirrel704

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in