- #1
RaduAndrei
- 114
- 1
The microscopic Ohm's law is:
J = sigma * E
So the density in every point is proportional to the electric field in that point.
My question. This sigma is also point-dependent? So the resistor could be made of different materials and ohm's law would hold for every point differently.
Or is this law only for resistors made of a single material?
I am thinking is the first case.
J = sigma * E
So the density in every point is proportional to the electric field in that point.
My question. This sigma is also point-dependent? So the resistor could be made of different materials and ohm's law would hold for every point differently.
Or is this law only for resistors made of a single material?
I am thinking is the first case.