AIIMS 2017 Physics Capacitors MCQ Question

The force of attraction between two charged plates in a parallel plate capacitor can be expressed as $F = \frac{1}{2} QE$, where $Q$ is the charge on the plates and $E$ is the electric field strength. This formula arises from the energy stored in the electric field, which is related to the force acting on the charge. Options B and C involve substituting values into the equation but do not provide a general understanding of the relationship, while option D incorrectly calculates the force without proper context or derivation from the original formula. Understanding this relationship is crucial for analyzing electric fields and forces in electrostatics.