Physics Physics Practice Problems Solutions Library

# Magnets and Magnetic Fields Solutions Library

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26 solutions

Magnets and Magnetic Fields

#### Q. Choose the best description of a magnetic field line.A. A magnetic field line shows the direction a positive charge would move.B. Magnetic field li...

Solved • Mar 30, 2021

Magnets and Magnetic Fields

#### Q. If a bar of copper is brought near a magnet, the copper bar will beA. made into an induced magnet.B. unaffected by the magnet.C. attracted by the m...

Solved • Mar 30, 2021

Magnets and Magnetic Fields

#### Q. The magnetic field lines inside a bar magnet go in what direction?A. from south pole to north pole B. from north pole to south pole C. from side to...

Solved • Dec 17, 2020

Magnets and Magnetic Fields

#### Q. In the first question, we determined the direction of the induced current in the conducting loop as the magnet was approaching it from above, south...

Solved • Dec 4, 2020

Magnets and Magnetic Fields

#### Q. A true difference between north and south polar areas is _________.

Solved • Nov 2, 2020

Magnets and Magnetic Fields

#### Q. How does a galvanometer use a magnetic field to indicate the strength of an electric current?

Solved • Nov 2, 2020

Magnets and Magnetic Fields

#### Q. Do the magnetic field lines really start at the pole face?

Solved • Oct 13, 2020

Magnets and Magnetic Fields

#### Q. From which end (north or south) of a bar magnet do magnetic field lines emerge?

Solved • Oct 13, 2020

Magnets and Magnetic Fields

#### Q. Do magnetic field lines ever start or end anywhere?

Solved • Oct 13, 2020

Magnets and Magnetic Fields

#### Q. a) Carefully draw the magnetic field lines for the bar magnet shown below. Be sure to draw the field lines so that they include information about t...

Solved • Aug 25, 2020

Magnets and Magnetic Fields

#### Q. Which of the following statements are true concerning the creation of magnetic fields? Check all that apply. A. A distribution of electric charges ...

Solved • Jul 15, 2020

Magnets and Magnetic Fields

#### Q. Answer the questions below on the basis of your experience with charges and magnets.  Based on your experience with electric field lines: a) how sh...

Solved • Jul 14, 2020

Magnets and Magnetic Fields

#### Q. Which of the following best describes magnetic field lines?Select the correct answer a. They always begin at a north pole and terminate at a south ...

Solved • Jul 14, 2020

Magnets and Magnetic Fields

#### Q. A compass in a magnetic field will line up __________.A. with the north pole pointing perpendicular to the magnetic field.B. with the north pole po...

Solved • Jul 13, 2020

Magnets and Magnetic Fields

#### Q. At which point in the diagram is the magnetic field strength (a) the smallest and (b) the largest? Explain.

Solved • Jun 3, 2020

Magnets and Magnetic Fields

#### Q. A bar magnet is pushed toward a loop of wire, as shown in Figure Q25.16. Is there a current in the loop? If so, in which direction? If not, why not?

Solved • May 21, 2020

Magnets and Magnetic Fields

#### Q. Which of the following statements are true concerning the creation of magnetic fields? Check all that apply. A. A distribution of electric charges ...

Solved • May 19, 2020

Magnets and Magnetic Fields

#### Q. A magnet will exert a force onA. A current-carrying wire.B. A piece of steel.C. A beam of electrons.D. All of the above.

Solved • May 18, 2020

Magnets and Magnetic Fields

#### Q. Compasses line up with magnetic fields. A compass will line upA. Parallel to magnetic field lines, with the south pole pointing in the direction of...

Solved • May 18, 2020

Magnets and Magnetic Fields

#### Q. Magnetic field lines form closed loops:A. Through current-carrying loops.B. Around current-carrying straight wires.C. Around and through bar magnet...

Solved • May 18, 2020

Magnets and Magnetic Fields

#### Q. The magnetism of a permanent magnet results from __________.A. the magnetic moments of nuclei in the material making up the magnetB. interactions w...

Solved • May 18, 2020

Magnets and Magnetic Fields

#### Q. Magnetic field lines form closed loopsa) Around and through bar magnets.b) Through current-carrying loops.c) Around current-carrying straight wires...

Solved • Apr 24, 2020

Magnets and Magnetic Fields

#### Q. Which of the following statements are true for magnetic field lines? Check all that apply.A) Magnetic field lines are close together in regions of ...

Solved • Apr 22, 2020

Magnets and Magnetic Fields

#### Q. A compass in a magnetic field will line up...a) with the north pole pointing in the direction of the magnetic field. b) with the north pole pointin...

Solved • Apr 21, 2020

Magnets and Magnetic Fields

#### Q. Two identical magnets are placed as shown. Using different colored pens, sketch the approximate magnetic field vectors at the four labeled points f...

Solved • Apr 8, 2020

Magnets and Magnetic Fields

#### Q. If you were to cut a small permanent bar magnet in half, A) None of these statements is true.  B) one piece would be a magnetic north pole and th...

Solved • Jan 5, 2017