Question

two small, identical conducting spheres A and B are a distance R apart; each carries the same charge Q. (a) What is the force sphere B exerts on sphere A? (b) An identical sphere with zero charge, sphere C, makes contact with sphere B and is then moved very far away. what is the net force now acting on sphere A? (c) Sphere C is brought back and now makes contact with sphere A and is then moved far away. What is the force on sphere A in this third case?

Answer 1

(a) k Q^2/R^2 repulsive

(b) now Q on A and Q/2 on B (also Q/2 on C)
so k Q^2/2R^2

(c)1.5/2 = .75 Q on A and still Q/2 on B
k*.75 *.5 Q^2 /R^2 = .375 k Q^2/R^2

Answer 2

Please help me the solutions

Answer 3

Help me with solutions