A very long wire ABDMNDC is showr figure carrying current I AB and BC parts straight long and at right angle At D w forms a

Question

A very long wire ABDMNDC is showr figure carrying current I AB and BC parts straight long and at right angle At D w forms a circular turn DMND of radius R BC parts are tangential to circular turn at N D Magnetic field at the centre of circle is M Hol 2R N B A D Hol 2 x 1 2 R MIC

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