Question

Three charges +4q, Q and q are placed in a straight line of length / at points at distances 0, l/ 2, and l
respectively. What should be Q in order to make the net force on q to be zero? ​

Answer 1

Look if you face any problem in understanding then feel free to ask me by commenting okay.....don't hesitate......If i am wrong then also tell me what is the answer given in your book....i will try to correct it and will make u explain......please refer the image.....

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