1)a long straight wire carries a current i.let B1 b the magnetic field at a pointt P at a distance "d"
frm the wire ..consider a sec of length "l" of this wire such that point P lies on perpendicular bisector of the section ..let B2 b the magnitude of magnetic field at this point due 2 this sec only.find the value of "d/l" so that B2 differs by B1 only by 1% ..
2>a long wire carrying a current i is bent 2 form a plane angle ∂ .find the magnetic field Bat a point on the bisector of this angle situated at a dist "X" frm the vertex..
plzzzzz hlp.....
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