CH 18 HW 1 F2008

# CH 18 HW 1 F2008 - CH 18 HW 1 F2008 11:39 PM WebAssign CH...

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10/30/08 11:39 PM CH 18 HW 1 F2008 Page 1 of 3 http://www.webassign.net/v4cgiknbaker@ncsu/student.pl?z=20081031033835knbaker@ncsu152720237 CH 18 HW 1 F2008 (Homework) BAKER KRISTINE NICOLE PY 208M, section 004, Fall 2008 Instructor: Laura I. Clarke Web Assign Current Score: 16 out of 16 Due: Monday, October 6, 2008 12:30 PM EDT Description Current in circuits Basic aspects of electron current flow in circuits Instructions Reading: Sec. 17.5 and Sec. 18.1-18.3 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. 2/2 points If 1.6 10 16 electrons enter a light bulb in 2 milliseconds, what is the magnitude of the electron current at that point in the circuit? 8e18 8.00e+18 electrons/second 2. 2/2 points If an electron current is 3.6 10 18 electrons/s. What is the conventional current? .576 0.576 A 3. 2/2 points The density of mobile electrons in copper metal is 8.4 10 28 m -3 . Suppose that i = 2.1 10 18 electrons/s are drifting through a copper wire. (This is a typical value for a simple circuit.) The

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## This note was uploaded on 10/30/2008 for the course PY 208M taught by Professor Chabay during the Spring '08 term at N.C. State.

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CH 18 HW 1 F2008 - CH 18 HW 1 F2008 11:39 PM WebAssign CH...

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