Two point charges in free space are Q1=10nC at (5,0,0) and Q2= 25nC at (-5,0,0). Where shouldQ3=20nC be located such that the force on Q3 is zero
Question
Solution 1
The force on Q3 due to Q1 and Q2 must be equal and opposite for the net force to be zero.
Let's consider two possible positions for Q3: one along the line joining Q1 and Q2 to the right of Q1 (position A) and the other to the left of Q2 (position B).
- Position A (x,0,0) where x > 5:
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