Question

What do you understand by the terms current and current density ? How are they related ?

Answer 1

Answer

The amount of electric current traveling per unit cross-section area is called as current density and expressed in amperes per square meter. More the current in a conductor, the higher will be the current density. ... Current density is a vector quantity having both a direction and a scalar magnitude.

Answer 2

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An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge past a region.

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In electromagnetism, 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.

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