I need an explanation about the leading and lagging power factor at electron level.
In a inductor it has the lot of free electrons are ready to move when we applied a voltage(AC or DC). If we apply a alternating voltage to a inductor, a change in current with respect to time is passing through it. According to induction principle, a change in current produce a change in magnetic field. So that a change in magnetic field produce a induced emf. This emf opposes the change in current wich was supplied by a alternating potential and which was causes of that emf.
Here My first question is for inductor: How the electron flow lags behind the supply voltage?
For a capacitor there is a dielectric medium between two plates. The dielectric medium itself has the randomly oriented dipoles. So that the net electrostatic force is zero. When we apply a potential between these two plates, the potential start to align the randomly oriented dipole's positive sides towards in which plate the electrons are accumulated and the negative sides of the dipole towards in which plate the electrons are pulled away.
Here My question for capacitor is: How the electron flow (current) leads the voltage?
(according to electrical laws potential only causes of electron flow. So without a potential the electron flow doesn't possible. How the electron flow leads the voltage in capacitor?)