A 10 millimeter long wire is conducting a DC curent - 20 A. Located within the same plane as the wire, a neodymium bar magnet is rotating very close to the wire, resulting in a uniform field 1.25 Tesla. If the resulting magnetic field covers the wire uniformly: Show the equation used for determining the magnitude and direction of the resulting force Calculate the minimum and maximum force applied to the wire. What direction does the force point to during a full rotation of the PM?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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A 10 millimeter long wire is conducting a DC curent - 20 A. Located within the same plane as the wire, a neodymium bar magnet is rotating very close to the wire, resulting in a uniform field 1.25 Tesla. If the resulting magnetic field covers the wire uniformly:

  1. Show the equation used for determining the magnitude and direction of the resulting force
  2. Calculate the minimum and maximum force applied to the wire.
  3. What direction does the force point to during a full rotation of the PM?

Hint: Ignore the dynamics of the rotation. Consider your answers for four representative points during the magnet's full rotation

Expert Solution
Step 1: Given:

text Current: end text
I equals 20 space A

text Magnetic Field: end text
B equals 1.25 space T

text Length of wire: end text
L equals 10 space m m equals 10 to the power of negative 2 end exponent space m

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