A Hollow Cylindrical (Inner Radius = 1

question 28

Multiple Choice

A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the conductor. Determine the magnitude of the magnetic field at a point that is 2.0 mm from the axis of the conductor.

• A) 8.0 mT
• B) 3.0 mT
• C) 5.3 mT
• D) 16 mT
• E) 1.2 mT

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