In: Physics
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.
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.
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:
zero | |
5.4 N, attractive | |
5.4 N, repulsive | |
3.6 N, attractive | |
3.6 N, repulsive |
after connecting the two spheres will have the average charge=(q1+q2)/2
=-24?c/2
=-12?c
the force between themisF=(1/4??)q1q2/r2
=9*10^9*144*10^-12C/0.36m^2
=3.6N repulsive
option (c) is correct answer.