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Infinite number of straight wires each carrying current I are equally placed as shown in the figure. Adjacent wires have current in opposite direction. Net magnetic field at point P is
Hiii The magnetic field from a straight finite length wire is :mwe * I (sinQ1 + sinQ2 )/4*pie*d d = a cos 30 = a*sqrt(3)/2 The magnetic field at a point P from the wire are written as ln (1+x) = x-x^2/2 + x^3/3 -x^4/4consider x = 1 so it will become log2So, A would be the correct ans.
Magnetic field from a straight finite length wire is d= perpendicular distance of point from wireI = Current, are angle of elevation from the point to top and bottom of wire So the magnetic field at point P from the wires are given as If we consider x=1 then we get Therefore the magnetic field at point P is equal to
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