32. According to Eq. 23-13 the electric field due to either sheet of charge with surface charge density σ= 1.77×10−22 C/m2is perpendicular to the plane of the sheet (pointing awayfrom the sheet if the charge is positive) and has magnitude E= σ/2ε0. Using the superposition principle, we conclude:
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Electric charge, Fundamental physics concepts, surface charge density