Question

a long straight wire carries a current I let B1 be the Magnetic field at a point P at a distance D from the wire consider a section of length L of these wire such that the point P lies on a perpendicular bisector of the section. let B2 be the magnetic field at this point due to this section only. find the value of d/l by so B2 differs from the B1 by one percent​

Answer 1

Answer:

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