The magnetic field 40.0 cm away from a long, straight wirecarrying current 2.00 A is 1.00 µT. (a) At what distance is it0.100 µT? (b) At one instant, the two conductors in a longhousehold extension cord carry equal 2.00 - A currents inopposite directions. The two wires are 3.00 mm apart. Find themagnetic field 40.0 cm away from the middle of the straightcord, in the plane of the two wires. (c) At what distance is itone - tenth as large? (d) The center wire in a coaxial cable carriescurrent 2.00 A in one direction, and the sheath aroundit carries current 2.00 A in the opposite direction. What magneticfield does the cable create at points outside?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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The magnetic field 40.0 cm away from a long, straight wire
carrying current 2.00 A is 1.00 µT. (a) At what distance is it
0.100 µT? (b) At one instant, the two conductors in a long
household extension cord carry equal 2.00 - A currents in
opposite directions. The two wires are 3.00 mm apart. Find the
magnetic field 40.0 cm away from the middle of the straight
cord, in the plane of the two wires. (c) At what distance is it
one - tenth as large? (d) The center wire in a coaxial cable carries
current 2.00 A in one direction, and the sheath around
it carries current 2.00 A in the opposite direction. What magnetic
field does the cable create at points outside?

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