Q.
Charges are placed on the vertices of a square as shown. Let E be the electric field and V the potential at the centre. If the charges on A and B are interchanged with those on D and C respectively, then
A) E remains unchanged, V changes
B) Both E and V change
C) E and V remain unchanged
D) E changes, V remains unchanged
Explanation
(d) Direction of E reverses while magnitude remains same and $V$ remains unchanged.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.