Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 30: Q. 9 (page 868)

9. Is the magnetic field strength in FIGURE Q30.9 increasing, decreasing, or steady? Explain.

Short Answer

Expert verified

The magnetic field shown in the figure is increasing.

Step by step solution

01

Step 1. Introduction

Figure shows that the magnetic field is out of the paper and the induced electric field is clockwise.

Since the induced electric field is clockwise, the magnetic field induced by the induced electric field will be into the plane of paper.

02

Step 2. Explanation

Now, according to Lenz's law, the induced field should oppose the cause of induction. In this case the cause of induction is changing magnetic field. So, a magnetic field which is into the plane of paper can oppose if the original magnetic field which is out of the plane of paper is increasing.

Conclusion:

Hence, the magnetic field shown in the figure is increasing.

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.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

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

An 8.0cm×8.0cmsquare loop is halfway into a magnetic CALC field perpendicular to the plane of the loop. The loop's mass is and its resistance is 0.010Ω. A switch is closed at t=0s, causing the magnetic field to increase from0to1.0Tin0.010s .

a. What is the induced current in the square loop?

b. With what speed is the loop "kicked" away from the magnetic field?

Hint: What is the impulse on the loop?

The maximum allowable potential difference across a 200 mH inductor is 400 V. You need to raise the current through the inductor from 1.0 A to 3.0 A. What is the minimum time you should allow for changing the current?

To determine the inductance of an unmarked inductor, you set up the circuit shown in FIGURE. After moving the switch fromatobat t=0s, you monitor the resistor voltage with an oscilloscope. Your data are shown in the table:

Use an appropriate graph of the data to determine the inductance.

81. III In recent years it has been possible to buy a 1.0Fcapacitor. This is an enormously large amount of capacitance. Suppose you want to build a 1.0Hzoscillator with a 1.0Fcapacitor. You have a spool of 0.25-mm-diameter wire and a 4.0−cm-diameter plastic cylinder. How long must your inductor be if you wrap it with 2 layers of closely spaced turns?

The square loop shown inFIGUREP30.53 moves into a 0.80TALCmagnetic field at a constant speed of10m/s.The loop has a resistance of 0.10Ω, and it enters the field at t=0s.

a. Find the induced current in the loop as a function of time. Give your answer as a graph of ii versus tfrom t=0sto t=0.020s.

b. What is the maximum current? What is the position of the loop when the current is maximum?
See all solutions

Recommended explanations on Physics Textbooks

Classical Mechanics

Read Explanation

Quantum Physics

Read Explanation

Electricity

Read Explanation

Circular Motion and Gravitation

Read Explanation

Fields in Physics

Read Explanation

Particle Model of Matter

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.

Sign-up for free