Question
Determine the magnetic field at the point $P$ due to a very long wire with a square bend as shown in Fig. $28-60 .$ The point $P$ is halfway between the two corners. [Hint: You can use the results of Problems 40 and $41 .]$
Step 1
According to the solution of problem 40, the magnetic field at point P due to this segment is given by: \[B_{\text{top}} = \frac{\mu_0 I}{2\pi} \times \frac{a}{\sqrt{a^2 + 4a^2}} = \frac{\mu_0 I}{2\pi a \sqrt{5}}\] Show more…
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