Question
Question: Diagram shows two charges placed at 'a' separation. A positive charge q is to be placed in such a wa...
Diagram shows two charges placed at 'a' separation. A positive charge q is to be placed in such a way that net force acting on Q and – 4Q be zero then-
A
q must be placed between Q and –4Q
B
q must be placed to the left of +Q
C
q must be placed to the right of –4Q
D
It is possible for any position of q
Answer
q must be placed to the right of –4Q
Explanation
Solution
F is the force between Q and –4Q. If q is placed right of –4Q then it can apply force opposite of F on both the charges.