The electric field above and below the plane shown in the figure below is given by (3 a 2 + 2 x, (2 a 2 + 2 x, z>0 Z<0 Where a is a constant with the appropriate units. What is the surface charge on the plane? Ẻ = a) o=0 b) The plane is charged but we need more information to calculate c) o = Eo a d) o =3 Eo a e) o = -a
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