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Find out the relieved heat, in time unity and volume unity, in a copper wire, in which...
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Current density represents the load which passes through cross-unit area, in unit time.
Current density is a size vector, targeted by the drift speed of load carriers
This is the "local" form of Joule's law P=RI^2
Posted by giorgiana1976 on July 21, 2009 at 3:07 AM (Answer #1)
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