The discussion centers on the behavior of electric charges on two parallel plates when a switch connecting them is closed. Initially, the energy stored in the electric field between the plates is given by the formula U = (1/2)ε₀E²(Ad). Upon closing the switch, the charges rearrange to equalize, resulting in each plate obtaining a charge of 2Q, as determined by symmetry and conservation of charge. The energy stored in the electric field between the plates vanishes, converting into heat due to the current flow until a steady state is reached.
PREREQUISITESStudents of physics, electrical engineers, and anyone interested in understanding the dynamics of electric charges in capacitive systems.
Dick said:Maybe more accurate to say that the 4q charge is evenly spread over the outside surfaces of the plates? There won't be any to speak of on the inside surfaces.