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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A wire carrying current i has the configuration as shown in figure. Two semi-infinite straight sections, both tangent to the same circle, are connected by a circular arc of central angle theta, along the circumference of the circle, with all sections lying in the same plane. What must be for B to be zero at the centre of the circle?

A wire carrying current i has the configuration as shown in figure. Two semi-infinite straight sections, both tangent to the same circle, are connected by a circular arc of central angle theta, along the circumference of the circle, with all sections lying in the same plane. What must be for B to be zero at the centre of the circle?

A wire carrying current i has the configuration as shown in figure.Two semi-infinite straight sections along the circumference of the circle are connected by a circular arc of central angle theta both tangent to the same circle with all sections lying in the same plane. What must be for B to be zero at the centre of the circle?