/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 68 The batteries in FIGURE P27.68 a... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 27: Q. 68 (page 765)

The batteries in FIGURE P27.68 are identical. Both resistors have equal currents. What is the resistance of the resistor on the right?

Short Answer

Expert verified

The resistance of the resistor on the right is 2R.

Step by step solution

01

Given Information

The batteries in the given picture are identical. Then both resistors have equal currents.

02

Step 2:Explanation

Let the current in both resistance is 'i'.

For Resistance R,

i=ER(1)

Voltage across unknown resistor=2E

So,i=2ERunknown(2)

Substitute (1) and (2)

ER=2ERunknown

鈬�Runknown=2R

Therefore, the resistance of the resistor on the right is2R

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The current in a wire at timetis given by the expression I=(2.0A)e-A[2.0渭s),

where tis in microseconds andt鈮�0.
a. Find an expression for the total amount of charge (in coulombs) that has entered the wire at time t. The initial conditions are Q=0Cat t=0渭s.
b. Graph Qversus tfor the interval 0鈮�t鈮�10渭s.

You've been asked to determine whether a new material your company has made is ohmic and, if so, to measure its electrical conductivity. Taking a 0.50mm脳1.0mm脳45mmsample, you wire the ends of the long axis to a power supply and then measure the current for several different potential differences. Your data are as follows:

Voltage (V)
Current (A)
0.2000.47
0.4001.06
0.6001.53
0.8001.97

Use an appropriate graph of the data to determine whether the material is ohmic and, if so, its conductivity.

II You need to design a 1.0Afuse that "blows" if the current exceeds 1.0A. The fuse material in your stockroom melts at a current density of 500A/cm2. What diameter wire of this material will do the job?

17. What is the mean time between collisions for electrons in (a) an aluminum wire and (b) an iron wire?

5. The electron drift speed is 2.0脳10-4m/s in a metal with a mean time between collisions of 5.0脳10-14s. What is the electric field strength?
See all solutions

Recommended explanations on Physics Textbooks

Fluids

Read Explanation

Quantum Physics

Read Explanation

Wave Optics

Read Explanation

Physical Quantities And Units

Read Explanation

Waves Physics

Read Explanation

Famous Physicists

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.