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A straight wire carrying a current of 12...

A straight wire carrying a current of 12 A is bent into a semi-circular are of radius of` 2.0` cm as shown in the adjoining figure (a). Consider the magnetic field B at the centre of the arc. Would your answer be different if the wire were bent into a semi-circular arc of the same radius but in the opposite way a shown in figure (b)?

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The correct Answer is:
`1.89 xx 10^(-4) T ox `, in case of (b) direction gets reverses
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