Brainstorm (olympiad preparation)
Two long parallel wires of negligible resistance are connected at one end to a resistance R and at the other end to a DC voltage source. The distance between the axis of wire is μ=20 times greater than the cross-section radius of each wire. At what value of resistance R, does the resultant force of interaction between the wires turn into zero. put your answer in kilo ohm
The answer is 0.36.
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