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Khan Academy
Khan Academy: Electricity and Magnetism: Proof: Field From Infinite Plate (1)
Check out how an electric field is generated by a uniformly charged, infinite plate. [13:27]
Khan Academy
Khan Academy: Electricity and Magnetism: Proof: Field From Infinite Plate (Pt 2)
Explains how an infinite plate that is uniformly charged produces an electric field that is constant, no matter how high above the plate it is. [11:28]