Question

Distinguish
between
electric current and
current density.
State and explain Ohm's
Low What is microscopic
form of Ohm's Low​

Answer 1

Explanation:

Question : Distinguish between electric current and current density ?

Answer :

1. Current is basically the rate of flow of electric charge per unit time whereas current density is the current flowing per unit area.

2. Current is a scalar quantity whereas current density is a vector quantity.

Question : explain Ohm's Low What is microscopic form of Ohm's Low

Answer :

The microscopic form of Ohm's law is J =σ E, where σ is the electrical conductivity, E the electric field and J the current density . This form of Ohm's law operates on a microscopic level relating the current density J to the conductivity σ and the electric field E