A charge is uniformly distributed on a thin ring with a linear charge density τ = 20 kC/cm. The radius of the ring is R = 5 cm. At a perpendicular to the plane of the ring, restored from its middle, there is a point charge Q = 40 nC. Determine the force acting on a point charge from the charged ring if it is removed from the center of the ring by: 1) a1 = 10 cm; 2) a2 = 2 m.
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