3. The electric field produced by an infinite sheet of charge has magnitude E= σ/2ε0, where is the surface charge density. The field is normal to the sheet and is uniform. Place the origin of a coordinate system at the sheet and take the xaxis to be parallel to the field and positive in the direction of the field. Then the electric potential is VVEdxV Exsxs=−z0, where Vsis the potential at the sheet. The equipotential surfaces are surfaces of constant
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