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Find the electric field due to an infini...

Find the electric field due to an infinitely long cylindrical charge distribution of radius R and having linear charge density `lambda` at a distance half of the radius from its axis.

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`r=R/2` point will be inside so `E=(2k lambda r)/(R^(2))=(2k lambda)/R^(2)(R/2)=lambda/(4pi in_(0)R)`
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