Two identical small conducting spheres are separated by 0.60m. The spheres carry

Question

Two identical small conducting spheres are separated by 0.60m. The spheres carry different amounts of charge and each sphere experiences an attractive electric force of 10.8N. The total charge on the two spheres is -24 ?C. In Situation 21.1, the two spheres are connected by a slender conducting wire, which is then removed. The electric force on each sphere is closest to: Situation 21.1 Two identical small conducting spheres are separated by 0.60m. The spheres carry different amounts of charge and each sphere experiences an attractive electric force of 10.8N. The total charge on the two spheres is -24 C.

The electric force on each sphere is closest to: a) zero b) 3.6 N, repulsive c) 5.4 N, repulsive d) 5.4 N, attractive e) 3.6 N, attractive

Explanation / Answer

after Connecting two sphere's will have charge of

Q=(Q1+Q2)/2=-24/2=-12 uC

So force between them is

F=KQ2/r2=(9*109)(-12*10-6)2/0.62

F=3.6 N

Since both charges have same sign ,they repel each other ,so answer is

F=3,6 N ,repulsive

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