Electrostatics 2 Question 6
6. Four equal point charges each are placed in the -plane at and . The work required to put a fifth charge at the origin of the coordinate system will be
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 6. (d)
Solution:
- The four charges are shown in the figure below,
Electric potential at origin
Now, if another charge
By putting the value of
or