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current density
(redirected from current densities)

    Also found in: Encyclopedia, Wikipedia 0.04 sec.
current density
n.
1. Symbol j, J Electricity A vector quantity whose magnitude is the ratio of the magnitude of current flowing in a conductor to the cross-sectional area perpendicular to the current flow and whose direction points in the direction of the current.
2. Physics The number of subatomic particles per unit time crossing a unit area in a designated plane perpendicular to the direction of movement of the particles.
current density
n
(Physics / General Physics) the ratio of the electric current flowing at a particular point in a conductor to the cross-sectional area of the conductor taken perpendicular to the current flow at that point. It is measured in amperes per square metre. Symbol J


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? Mentioned in ? References in periodicals archive
 
By contrast, ordinary household wiring carries current densities that reach only a few hundred amperes per square centimeter.
Magnetic overthrow: physicists expose a hidden facet of a familiar ... by Weiss, Peter / Science News
the critical temperatures, current densities, and field strengths, along with the structure of the materials.
NIST materials properties databases for advanced ceramics by Munro, R.G. / Journal of Research of the National Institute of Standards and Technology
In general, he noted, the City took areas where there were more vacant sites and rezoned to make it easier to develop with new residential, but at current densities, and in the historic areas, reduced densities and reduced the allowable envelopes.
Re-zoning is planned for Chelsea by Weiss, Lois / Real Estate Weekly
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