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# Question: in the figure four particle form a square with edge...

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In the figure four particle form a square with edge a=2.9*10^-2 mtr The charges are q1=q4=2.33*10^-15 C and q2=q3=q What is value of q if net electrostatic force on 1 is zero .

Is there any value of q which makes the force on each of the particle zero ?