Prof Viviana Vladutescu

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Problem Solving

• Prof Viviana Vladutescu

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• A cylindrical pipe with a 1.0 cm wall thickness
  and an inner radius of 4.0 cm is centered on the
  z-axis and has an evenly distributed 3.0 amps of
  current in the az direction. Plot the magnetic
  field intensity H versus radial distance from the
  z-axis over the range 0 r 10 cm.(25 points)

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For each Amperian Path
Now, for r lt a, Ienc 0 so H 0. For a lt r lt b,
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• Determine the magnetic flux density (Wb/m2) and
  magnetic flux (Wb) inside a solenoid filled with
  mumetal, having 20 closely wound turns per unit
  length and carrying a current I of 3A. The radius
  of the solenoid is 1 cm.