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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Question
67. A metallic wire has a diameter of 4.12mm. When the current in the wire is 8.00A, the drift velocity is 5.40×10−5m/s.
What is the density of free electrons in the metal?
Express the answer numerically in m−3m−3 to two significant figures.
Expert Solution
Step 1
Given,
diameter of metallic wire
so its radius
Current in the wire
drift velocity
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