Consider a conductor of length L and cross-sectional area A. The material of which is constituted the conductor has resistivity p. Knowing that the current density J in this conductor at constant...

Physic 3

Extracted text: Consider a conductor of length L and cross-sectional area A. The material of which is constituted the conductor has resistivity p. Knowing that the current density J in this conductor at constant temperature is linearly proportional to the electric field E, find the relationship between the electric current i flowing this conductor and the ddp V applied to it. L V