Essay
An irregular conductor carries a surface charge density of -6.75 µC/m2 at and in the vicinity of a point P on the surface.An electron is released just above P outside the conductor.What are the magnitude and direction of its acceleration the instant after it is released?
(ε0 = 8.85 × 10-12 C2/N ∙ m2,e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg)
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