A point charge Q is placed at the mid point of a line joining two charges, 4q and q. If…
Physics · Class 12 · CBSE — Electric Charges and Fields
A point charge Q is placed at the mid point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to:
- -q
- +q
- -2q
- +4q
Answer
(C) -2q
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