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Can you explain current density in terms of velocity

Can you explain current density in terms of velocity

Grade:10

2 Answers

Arun
25750 Points
3 years ago
current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. ... In SI base units, the electric current density is measured in amperes per square metre.
Vikas TU
14149 Points
3 years ago
Electric current is a macroscopic physical quantity that describes the movement of many electrons over some given unit of time. We can now define a new physical quantity that describes the motion of these electrons on the microscopic level and this quantity is known as current density. Current density is defined as the electric current per unit area and represents a vector quantity. The direction of this vector is in the same direction that a positive charge (or electric current) would flow within a given electric field. As we see in this lecture, we can define current density in terms of drift velocity, which is the steady average velocity of the electrons in the wire.

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