Gauss' Law
a)Using Gauss’ Law, derive an equation for the electric field E, at some distance r from an infinite line charge with a linear charge desity ;λ. State the magnitude and the direction. Use the Gaussian cylinder in the diagram.
b)Use the expression derived in part a) to determine the numerical value of the electric field for a lambda=1 X 10-6C/m at a distance of 5 cm from the infinite line charge.
c)what is the magnitude and direction of the electric field if I replace the positive line charge with a negative line charge of the same magnitude charge density?
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