The magnetic field 40.0 cm away from a long, straightwire
Chapter , Problem 53(choose chapter or problem)
The magnetic field 40.0 cm away from a long, straightwire carrying current 2.00 A is 1.00 mT. (a) At what distanceis it 0.100 mT? (b) At one instant, the two conductorsin a long household extension cord carry equal2.00-A currents in opposite directions. The two wiresare 3.00 mm apart. Find the magnetic field 40.0 cmaway from the middle of the straight cord, in the planeof the two wires. (c) At what distance is it one-tenth aslarge? (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 magnetic field does the cable create at pointsoutside?
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