Two particles each with a charge -Q are fixed a distance L apart . Each particle experiences a net electric force F. A particle with a charge +q is now fixed midway between the original two particles. As a result, the net electric force experienced by each negatively charged particle is reduced to F/2. The value of q is:. A. Q
B. Q/2
C. Q/4
D. Q/8
E. Q/16

B. Q/2

Explanation:

Given;

charge of the two particles, = -Q

distance between the two charges, r = L

the net force experienced by each charge = F

Apply coulomb's force between two charged particles;

when

+q is introduced midway between the charges, the net force is reduced by 2

Thus, The value of q is Q/2

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