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Question

A pair of stationary and infinitely long bent wires are placed in the XY plane as shown in the figure. The wires carry currents of I=10 amp each as shown in the figure. The segments L and M are along the X-axis such that OS=OR=0.02m. Find the magnitude and direction of the magnetic induction at the origin O.
1013137_215641a6aaec42ebb8f646d5b69344e3.png

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Solution


(Refer to Image)
Magnetic field at point O due to the wire RP is
=μo4πIr[sinθ1+sinθ2]
=μo4π100.02×[sinO+sinπ/2]
=107×100.02×1

Same for the wire SQ .
Total B=2×107×100.02

=107×10×102=104T .

1137560_1013137_ans_c9e6b126bb524f098affdae1d057f914.png

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