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An electric charge q exerts a force F on similar electric charge q separated by a distance 'r' . A third charge -q/4 is placed midway between the two charge . Now force acting on charge q due to other two charges becomes .

An electric charge q exerts a force F on similar electric charge q separated by a distance 'r' . A third charge -q/4 is placed midway between the two charge . Now force acting on charge q due to other two charges becomes .

Grade:10

1 Answers

saikat deria
13 Points
4 years ago
answer is distance of charges is 4.
F=kq/r2-kq/[4-r2]
0=[4-r2]-r2
=0=4-2r2
=2=r2
=[4-2]2
=[2]2
=4
hense the answer is 4

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