Question

The two charges $+Q$ and $-4Q$ are kept at some distance on the scale. The points $A$ to $E$ are marked as shown in figure. At which point would a small positive charge $q$ feel the greatest force?

• A. A
• B. B
• C. C
• D. D
• E. E

Answer 1

The correct option is D D

A small charge placed at point D would experience a strong attractive force (to the right) from -4 Q and a repulsive force (to the right) from +Q. The force on the small charge is greatest at the closest distance from the large charge.