The wires leading to and from a 0.12-mm-diameter lightbulb filament are 1.5 mm in diameter. The wire to the filament carries a current with a current density of 4.1×105 A/m2
a. What is the current in the filament?
Express your answer to two significant figures and include the appropriate units.
b.What is the current density in the filament?
Express your answer to two significant figures and include the appropriate units.
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