Modeling the leaky capacitor as an ideal capacitor in parallel with a resistor is not convenient for me right now because I lose what really happens as far as the establishment of a closed circuit and current flow within the dielectric is concerned. :smile:
Thanks a million for your reply! I’ll have to disagree though!
The particles that move could be ions, as in the case of salt water, and they can’t be abundant since the concentration of salt is limited.
Moreover, I think that there is a fundamental difference between a resistance and a...
Assume that we have a parallel plate capacitor filled with an imperfect dielectric. Then we apply a DC Voltage between the plates and expect some leakage current through the capacitor due to the dielectric having non-zero conductivity.
My question regards the movement of electric charges...
I think that your arguments are solid and can only lead to the conclusion that there must be some kind of surface charge distribution producing the Electric Field within and outside the wire.
In fact such a distribution exists indeed and, as I mentioned above, it varies linearly along the...
It is falsely believed that the source of the Electric Field within a wire carrying a constant current is the charges that are accumulated in the terminals of a battery.
If that was true, the internal Electric Field could not adjust to any change in the geometry of the wire, which is a...
Many theorists believe that there can’t be any Electric Field outside a current carrying wire and their main argument is based on the assumption that the wire is neutral electrically.
Although the wire has no net charge as a whole, the charge density on the surface is not constant (in fact it...
Thank you for your reply, but that was somehow confusing to me! Especially this part (the current is steady) :
I’m really interested in how the Electric Field inside a conducting wire is produced. It shows some very interesting features (steady magnitude, always tangential to the wire, no field...
Suppose that we have a wire that connects the two poles of a DC battery. The current produced indicates the presence of some Electric Field within the wire, having a constant magnitude and a direction that follows its path.
Now the question is : What is the source of that Electric Field...
Thank you for widening my horizons! Let’s see if I got this right this time:
The magnetic field depends both on free and bound currents.
In the example above (toroid with a ferromagnetic core, having a small gap) we can assume uniform magnetization within the core region, so no bound current...
H-field depends on core material of toroid?
If I got this right, the H-field does not depend on the material it is applied on and is only determined by its sources (free currents).
So, suppose that we have a toroidal coil and some undefined core. As far as the H-filed is concerned, it would...