Chapter9: Current And Resistance
Section: Chapter Questions
Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...
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An aluminum "12 gauge" wire has a diameter d of 0.205 centimeters. The resistivity ρ of aluminum is 2.75×108 ohm-meters. The electric field in the wire changes with time as E(t)=0.0004t2 -0.0001t + 0.0004 newtons per coulomb, where time is measured in seconds.
What is the current I through the conductor at time 5.0 seconds?
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