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Author Question: A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current ... (Read 181 times)

OSWALD

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on: Jul 28, 2018
A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the same direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
 a. 1.1 mT
  b. 1.4 mT
  c. 1.7 mT
  d. 2.0 mT
  e. 0.2 mT

Question 2

A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 24 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the opposite direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
 a. 0.82 mT
  b. 0.93 mT
  c. 0.70 mT
  d. 0.58 mT
  e. 0.40 mT


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kthug

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


OSWALD

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Reply #2 on: Jul 28, 2018
Thanks


kthug

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Reply #3 on: Jul 28, 2018
Welcome :)


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