2x10^20 electrons flow through a cross section of a 3.80-mm-diameter iron wire i

Question

2x10^20 electrons flow through a cross section of a 3.80-mm-diameter iron wire in 6.0s what is the electron drift speed?

openvellum.ecollege.com/course htmircourseld-1413893080penVellumHMAC-201o8rB4054d67506ble/31b 1 1000 Apps HP Conn MasteringPhysics: CH 27 HW-Google Chrome Secure https://session.masteringphysics.com/myct/itemView?assignmentProblemID-81388450 CH 27 HW Problem 27.1 - Enhanced -with Feedback MasteringPh PENNST Problem 27.1 -Enhanced-with Feedback Part A 2.00 × 1020electrons flow through a cross section of a 380-mm-diameter iron wire in 6.00 s You may wart to review (pages743-145) O My Courses What is the electron drift speed? Course Home Assignments Scores eText User Settings Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining

Explanation / Answer

electron density for iron = 8.5 * 1028 m-3

I = q * 2.00 * 1020 / 6

I = 1.6 * 10-19 * 2.00 * 1020 / 6

I = 5.33 A

r = 3.8 mm / 2 = 1.9 mm

Drift velocity = I / (n * q * A)

= (5.33) / (8.5 * 1028 * 1.6 * 10-19 * pi * (1.9 * 10-3)2)

electron drift speed = 3.45 * 10-5 m/s

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.