between wires
field is down from one of them and up from the other
The B from a wire times 2 pi * distance from the wire is proportional to the current through
so
1/2pir = 2/ 2pi(2 -r)
2 r = 2 - r
3 r = 2
r = .66666666667 cm
:)
Two parallel wires, separated by the distance of 2 cm, carry the currents I1 = 1 A and I2 = 2 A in the same direction. How far from the wire carrying the current I1 is the magnetic field zero?
I am wondering if the answer might be that it can never equal 0. Since the current is traveling in the same direction B2-B1=0 in between the wires.
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