Q. Two similar spheres having +Q and -Q charges are kept at a certain distance. F force acts between the two. If at the middle of two spheres, another similar sphere having +Q charge is kept, then it experiences a force in magnitude and direction as (a) zero having no direction. (b) 8F towards +Q charge. (c) 8F towards -Q charge. (d) 4F towards +Q charge
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the force between two charges varies directly with the product of the charges and inversely with the square of the distance between them; describes the force between two charges when they are at rest; if several charges are present, the net force on any one of them will be the vector sum of the forces due to each of the others; Fe is stronger than Fg because Fe = kq₁q₂/r²
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