The electric field in a region is given by `E=alphaxhati`. Here `alpha` is a constant of proper dimensions. Find
a. the total flux passing throug a cube bounded by the surface `x=l, x=2l, y=0, y=l, z=0, z=l`.
b. the charge contained inside in above cube.
A. `2alphaepsilon_(0)l^(3)`
B. `alphaepsilon_(0)l^(3)`
C. `4alphaepsilon_(0)l^(3)`
D. `3alphaepsilon_(0)l^(3)`
