A very long wire carrying a current i is bent to form a plane at an angle α. Find the magnetic field B at a point P on the bisector of this angle situated at a distance x from the vertex A.
Let CAB be the wire making an angle α, P be a point on the bisector of this angle situated at a separation x from the vertex A and d be the perpendicular distance of AC and AB from P.
From the diagram,
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The induced magnetic field B due to wire AB
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=
The magnetic field due to current in both the wires
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