Лаг1989 задача №13.3

A point charge 3·10⁻⁸C is located at a distance L₁=3.8 cm from a grounded metal wall. Find the surface density of the charge induced on the wall: a) at the point closest to the charge ; b) at a point located at a distance L₂=5 cm from the charge; c) the total charge induced on the wall.

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