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Using Gauss’s law, derive expression for...

Using Gauss’s law, derive expression for intensity of electric field at any point near the infinitely long straight uniformly charged wire.
The electric field components in the following figure are `E_(x) = alphax, E_(y) = 0, E_(z) = 0, " in which " alpha = 400 N//C` m. Calculate (i) the electric flux through the cube, and (ii) the charge within the cube assume that a = 0.1m.

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