1.

Electric field due to infinite long straight wire of linear charge density λ varies with ⊥ distance of point from the wire as * (a) r⁰(b) r⁻¹(c) r²(d) r⁻³​

Answer»

long infinite wire with CHARGE density .To find:Relation of field intensity with RADIAL distance r ?CALCULATION:Consider a cylindrical GAUSSIAN SURFACE around the infinite wire of radius r and height h.Applying Gauss' Law:So, FINAL answer is :



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