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Expression for a Magnetic Field

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A conductor consists of a circular loop of radius R and two straight, long sections. The wire lies in the plane of paper and carries a current I. Find an expression for the magnetic field at the center of the loop.

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1. A conductor consists of a circular loop of radius R and two straight, long sections. The wire lies in the plane of paper and carries a current I. Find an expression for the magnetic field at the center of the loop.

Magnetic field due to the long CCL at the centre of the loop = into the plane of paper
Magnetic field due to the circular loop at the centre of the loop = into the plane of ...

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