A lightbulb filament has diameter 0.050 mm and carries 0.833 A. Find the current density (a) in
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A lightbulb filament has diameter 0.050 mm and carries 0.833 A. Find the current density
(a) in the filament
(b) in the 12-gauge wire (diameter 2.1 mm) supplying current to the lightbulb.
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