A piece of wire carrying a current of 6.00A

Question:

A piece of wire carrying a current of $6.00 \mathrm{~A}$ is bent in the form of a circular arc of radius $10.0 \mathrm{~cm}$, and it subtends an angle of $120^{\circ}$ at the center. Find the magnetic field B due to this piece of wire at the center.

Solution:

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