College Physics
College Physics
10th Edition
ISBN: 9781285737027
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Concept explainers

Magnetic Force
A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.
Question

A long, straight wire carries a current I as shown in the figure. Which of the following statements is true regarding the magnetic field due to the wire at point P ?

  • The magnitude is proportional to I but does not depend on r.
  • The magnitude is proportional to I /r and the direction is into the page.
  • The magnitude is proportional to I /r^2 and the direction is out of the page.
  • The magnitude is proportional to I /r^2 and the direction is into the page.
  • The magnitude is proportional to I /r and the direction is out of the page.
P
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Transcribed Image Text:P
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Magnitude of magnetic field produced by current through infinite long straight wire.
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Direction of magnetic field
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Correct statement
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