Problem: The wire semicircles shown in Fig. P28.66  have radii a and b. Calculate the net magnetic field (magnitude and direction) that the current in the wires produces at the point P. 

FREE Expert Solution

Magnetic field:

B=μ0i4r

The magnetic field due to the inner semicircle at point P is coming out of the page and is found as:

B2 = μ0i/4a

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Problem Details

The wire semicircles shown in Fig. P28.66  have radii a and b. Calculate the net magnetic field (magnitude and direction) that the current in the wires produces at the point P. 


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