(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Three long, straight wires are carrying currents that have

the same magnitude. In C the current is opposite to that

in A and B. The wires are equally spaced. Each wire experiences a net force due to the other two wires. Which

wire experiences a net force that has the greatest magnitude?

A =====>====

B=====>====

C=====<====

2. Relevant equations

FAB = μ°I1 I2 / 2∏d

3. The attempt at a solution

It says that the answer is B because 2I squared / d is the net force on B. But the way I am doing it is -I^2/d + I^2/d = 0, hence the net forces cancel out and the force on B is zero. I don't understand how it is 2I^2/d. Please help.

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# Magnetic Field with three parallel wires

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