A small charged sphere of mass 2.1 × 10-4kg, suspended from a thread of insulating
material, was placed between two vertical parallel plates 60 mm apart. When a potential
difference of 4200 V was applied to the plates, the sphere moved until the thread made an angle
of 6o to the vertical.
i) Draw a free body diagram indicating all the forces acting on the sphere.
ii) State and explain the origin of each of the forces acting on the sphere
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