The figure below (please see attached picture) shows a long straight wire between the poles of a permanent magnet. It is connected through a switch to a battery so that, when the switch is closed, there is a steady current in the wire. (a) State the direction of the magnetic field between the poles of the magnet. (b) The wire is free to move. The current is switched on so that its direction is into the page. (i) State the direction of movement of the wire. (ii) Explain how you reached your answer to (b)(i). (c) This experiment is the basis of an electric motor.
The figure below (please see attached picture) shows a long straight wire between the poles of a permanent magnet. It is connected through a switch to a battery so that, when the switch is closed, there is a steady current in the wire. (a) State the direction of the magnetic field between the poles of the magnet. (b) The wire is free to move. The current is switched on so that its direction is into the page. (i) State the direction of movement of the wire. (ii) Explain how you reached your answer to (b)(i). (c) This experiment is the basis of an electric motor.
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter24: Magnetic Fields
Section: Chapter Questions
Problem 80A
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The figure below (please see attached picture) shows a long straight wire between the poles of a permanent magnet.
It is connected through a switch to a battery so that, when the switch is closed, there is a steady current in the wire.
(a) State the direction of the magnetic field between the poles of the magnet.
(b) The wire is free to move. The current is switched on so that its direction is into the page.
(i) State the direction of movement of the wire.
(ii) Explain how you reached your answer to (b)(i).
(c) This experiment is the basis of an electric motor.
Describe two changes to the arrangement shown in the figure that would enable continuous rotation to take place.
- change 1
- change 2
Transcribed Image Text:The figure below shows a long straight wire between the poles of a permanent magnet.
It is connected through a switch to a battery so that, when the switch is closed, there is a steady current in
the wire.
S
'wire in a direction
at right angles to the page
(a) State the direction of the magnetic field between the poles of the magnet.
(b) The wire is free to move. The current is switched on so that its direction is into the page.
(1) State the direction of movement of the wire.
(ii) Explain how you reached your answer to (b)(i).
(c) This experiment is the basis of an electric motor.
Describe two changes to the arrangement shown in the figure that would enable continuous rotation to
take place.
change 1
change 2
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