A copper wire has a circular cross section with a radius of 1.06 mm. (a) If the wire carries a current of 4.03 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 ✕ 1029 electrons/m3.) m/s (b) For the same wire size and current, find the drift speed (in m/s) of electrons if the wire is made of aluminum with n = 2.11 ✕ 1029 electrons/m3. m/s
A copper wire has a circular cross section with a radius of 1.06 mm. (a) If the wire carries a current of 4.03 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 ✕ 1029 electrons/m3.) m/s (b) For the same wire size and current, find the drift speed (in m/s) of electrons if the wire is made of aluminum with n = 2.11 ✕ 1029 electrons/m3. m/s
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...
Related questions
Question
A copper wire has a circular cross section with a radius of 1.06 mm.
(a)
If the wire carries a current of 4.03 A, find the drift speed (in m/s) of electrons in the wire. (Take the density of mobile charge carriers in copper to be n = 1.10 ✕ 1029 electrons/m3.)
m/s
(b)
For the same wire size and current, find the drift speed (in m/s) of electrons if the wire is made of aluminum with n = 2.11 ✕ 1029 electrons/m3.
m/s
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