The solution of the problem 2.12 cr 2 from the problem

The solution of the problem 2.12 cr 2 from the problem

Task 2.12
In the field of an infinite uniformly charged plane with a surface charge density of 10 μC / m2, a charge moves from a point 0.1 m away from the plane to a point 0.5 m away from it. Determine the charge, if the work is done 1 mJ.