Ch 18 HW 4 F2008

Ch 18 HW 4 F2008 - Ch 18 HW 4 F2008 10/30/08 11:40 PM...

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10/30/08 11:40 PM Ch 18 HW 4 F2008 Page 1 of 6 http://www.webassign.net/v4cgiknbaker@ncsu/student.pl?z=20081031033835knbaker@ncsu152720237 Ch 18 HW 4 F2008 (Homework) BAKER KRISTINE NICOLE PY 208M, section 004, Fall 2008 Instructor: Laura I. Clarke Web Assign Current Score: 31 out of 31 Due: Friday, October 17, 2008 12:30 PM EDT Description Energy conservation and charge conservation in circuits (includes parallel circuits). Instructions Reading: Sec. 18.7-18.9 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Extensions are no longer available for this assignment. (Automatic Extensions are only available within 2 days of the assignment due date.) View Key 1. 10/10 points A circuit is constructed from two batteries and two wires, as shown in the diagram below. Each battery has an emf of 1.6 volts. Each wire is 25 cm long, and has a diameter of 0.0007 meters. The wires are made of a metal which has 7e+28 mobile electrons per cubic meter; the electron
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10/30/08 11:40 PM Ch 18 HW 4 F2008 Page 2 of 6 http://www.webassign.net/v4cgiknbaker@ncsu/student.pl?z=20081031033835knbaker@ncsu152720237 mobility is 6e-05 (m/s)/(V/m). A steady current runs through the circuit. The locations marked by "x" and labeled by a letter are in the interior of the wire. Which of these statements about the electric field in the interior of the wires, at the locations marked by "x"s, are true? Check all that apply. At every marked location the magnitude of the electric field is the same. The magnitude of the electric field at location
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Ch 18 HW 4 F2008 - Ch 18 HW 4 F2008 10/30/08 11:40 PM...

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