A (100-mathrm{mm}) section of wire is bent into a circular arc. What must the radius of the

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A \(100-\mathrm{mm}\) section of wire is bent into a circular arc. What must the radius of the arc be for a current of \(6.0 \mathrm{~A}\) to produce a magnetic field of \(7.5 \times 10^{-5} \mathrm{~T}\) at the centre of the arc?

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