Overview
The electric field energy is the energy of the electric field, the electric field energy is equal to the integral of the electric field energy density to the electric field, and the energy generated by the point charge is more than point charge. Square of charge.
Capacitor energy storage
Try to use the expression of capacitor energy to change the electric field strength, as an example of parallel plate capacitors:
e e represents the electric field energy; c represents the capacitance of the parallel plate capacitor; u represents the difference between the two plates between two plates; k Indicates the static constant; s represents the pair of pairs of pairs; D represents the distance between the two plates.