Question

current density in a conductor is range of?

Answer 1

Answer:

In electrical wiring, the maximum current density can vary from 4 A⋅mm−2 for a wire with no air circulation around it, to 6 A⋅mm−2 for a wire in free air. Regulations for building wiring list the maximum allowed current of each size of cable in differing conditions.

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Answer 2

Answer:

Current density refers to the density of current flow in some conductor. It is denoted by the symbol J. In the field of electromagnetism, Current Density and its measurement is very important. It is the measure of the flow of electric charge in amperes per unit area of cross-section i.e. m².

Explanation:

In electrical wiring, the maximum current density can vary from 4 A⋅mm−2 for a wire with no air circulation around it, to 6 A⋅mm−2 for a wire in free air. Regulations for building wiring list the maximum allowed current of each size of cable in differing conditions.

In SI base units: A m−2

Dimension: I L−2

Common symbols: j →

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