Two equal point charge Q=?2 microcoulomb are placed at each of the two corners of a square and equal point charges 'q' at each of the other corners.What must be the value of 'q' so that the resultant force on Q is 0.
Asked by anshuman dutta | 24th Apr, 2014, 09:29: AM
Each side of square is of length b.
Hence, distance of charge Q from opposite charge Q is PR =
We can see that if the resultant force on charge Q placed at point R is zero, then charges at Q and S have to be negative.
Forces FP, FQ and FS act on the charge Q at point R. Force FP will have vertical and horizontal components.
Hence, we have
Thus, we have
Answered by Romal Bhansali | 7th May, 2014, 12:34: PM
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