Three charges are located on the x-axis of a cartesian grid such that charge A (

Question

Three charges are located on the x-axis of a cartesian grid such that charge A (+3 mC) is at
the origin, charge B (?5 mC) is at (2,0) and charge C (+6 mC) is at (5,0).
(i) Charge B is free to move, while the positions of A and C are fixed. In which direction
will charge B move? [2]
(ii) A negatively charged particle, D, is present in the system and is the only one free to
move, while A, B, and C fixed at the positions listed above. Perform the calculations to
determine whether D, if placed at (2,4), would start to move away from the line of charges
(in the positive y direction), or towards it?

Explanation / Answer

1. charge B will move towards charge C 2. with out knowing the magnitude of charrge D , calculations are not possible.

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