A very long conducting wire is bent in a semi-circular shape from A to B as shown in the figure. The magnetic field at point P for steady current configuration is given by:
medium
Moving Charges and Magnetism
2023
physics
4Rμ0i pointed into the page
4Rμ0i pointed away from the page
4Rμ0i(1−π2)
4Rμ0i(1−π2)
Explanation
To solve this problem, we need to find the magnetic field at point P due to the current in the wire.The wire consists of three parts: two straight sections and one semi-circular section.1. Magnetic field due to the straight sections:• The magnetic field at the center of a straight wire is zero because the contributions from opposite sides cancel each other out.2. Magnetic field due to the semi-circular section:
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