In figure, two positive charges, \[{{q}_{2}}\] and \[{{q}_{3}}\] fixed along the Y-axis, exert a net electric force in the +x direction on a charge \[{{q}_{1}}\] fixed along the X-axis. If a positive charge Q is added at (x, 0), the force on \[{{q}_{1}}\]: ` (NCERT EXEMPLAR) |
A) shall increase along the positive X-axis
B) shall decrease along the positive X-axis
C) shall point along the negative X-axis
D) shall increase but the direction changes because of the intersection of Q with \[{{q}_{2}}\] and \[{{q}_{3}}\]
Correct Answer: A
Solution :
shall increase along the positive X-axis Since, positive charge \[{{q}_{1}}\] and \[{{q}_{3}}\] exert a net force in the + x-direction on the charge \[{{q}_{1}}\] fixed along the X-axis, the charge \[{{q}_{1}}\] is negative as shown in figure. Obviously, due to addition of positive charge Q at (x, 0), the force on -q shall increase along the positive X-axis.You need to login to perform this action.
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