Discussion
The potential at the centre of a square of side \( a \) with equal charges \( Q \) at each corner is
Answer: A
Each corner is at a distance of half the diagonal, that is \( a/\sqrt{2} \), and being scalars the four contributions simply add. The field at the same point, by contrast, is exactly zero, since the four vector contributions cancel in opposite pairs, which is a good illustration of how differently the two quantities behave.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development