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

Consider a general point on the line joining the two wires and a distance d

away from the mid-point O. By summing the magnetic field due to currents of magnitude i flowing in both the wires which are non-zero, show that on the line joining the two wires, the magnetic field strength is given by:

B= μ iD / π(D2 −d2)

2. Relevant equations

(D^2 −d^2) = (D+d)(D-d) ****** a simple trig identity

B= μ i / 2π d

3. The attempt at a solution

I'm kinda stuck - any pointers on where to start?

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# Joining two wires, magnetic fields and a little algebra

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