The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 A is 1.00 µT. (a) At what dis- tance is it 0.100 µT? (b) What If? 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 heath around it carries current 2.00 A in the opposite lirection. What magnetic field does the cable create at oints outside the cable?

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Chapter1: Units, Trigonometry. And Vectors
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8K The magnetic field 40.0 cm away from a long, straight
W wire carrying current 2.00 A is 1.00 µT. (a) At what dis-
tance is it 0.100 µT? (b) What If? 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 the cable?
Transcribed Image Text:8K The magnetic field 40.0 cm away from a long, straight W wire carrying current 2.00 A is 1.00 µT. (a) At what dis- tance is it 0.100 µT? (b) What If? 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 the cable?
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