A long vertical wire carries an unknown current. Coaxial with the wire is a long cylindrical conducting surface that carries a current of 30 mA upward. The cylindrical surface has a radius of 3 mm. If the magnetic field at a point 5.0 mm from the wire has the magnitude of 1.0 µT and is directed counterclockwise as viewed from above, what is the current in the wire? Enter result as positive if it is upward and negative if it is downward.
A long vertical wire carries an unknown current. Coaxial with the wire is a long cylindrical conducting surface that carries a current of 30 mA upward. The cylindrical surface has a radius of 3 mm. If the magnetic field at a point 5.0 mm from the wire has the magnitude of 1.0 µT and is directed counterclockwise as viewed from above, what is the current in the wire? Enter result as positive if it is upward and negative if it is downward.
Chapter12: Sources Of Magnetic Fields
Section: Chapter Questions
Problem 25P: A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in...
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