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Q.

A charge q1 exerts some force on a second charge q2. If third charge q3 is brought near, the force of q1 exerted on q2

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a

Increases if q3 is of the same sign as q1 and decreases if q3 is of opposite sign.

b

Decreases

c

Increases

d

Remains unchanged

answer is C.

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Detailed Solution

Given data: There are three charge particle q1, q2, and q3 are given 

Concept Used: Superposition of charge particle 

Detailed Solution: According to superposition principle, 

The force of interaction between two charges does not depends on the presence of any other charge particle. 

It still remains same as q1q24πε0r2

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