CH21-HW04-FALL2010

CH21-HW04-FALL2010 - 1 2/14/11 CH21-HW04-FALL2010 WebAssign

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12/14/11 CH21-HW04-FALL2010 1/5 www.webassign.net/web/Student/Assignment-Responses/last?dep=3173288 Current Score : 26 / 26 Due : Sunday, November 13 2011 11:59 PM EST 1. 6/6 points | Previous Answers MI3 21.4.X.063 A copper wire with square cross section carries a conventional current I in the +z direction. There is a magnetic field B in the -y direction. Draw a diagram illustrating the situation, to help you answer the following questions. What is the direction of E parallel , the electric field that causes the current to flow? +z +z What is the direction of the drift velocity of the mobile electrons? -z -z What is the direction of the magnetic force on the moving electrons? +x +x What is the direction of E transverse , the electric field due to the Hall effect, inside the wire? +x +x If the mobile charges had been positive (holes) instead of negative, what would have been the direction of the magnetic force on the moving positive charges? +x +x If the mobile charges had been positive instead of negative, what would have been the direction of the transverse electric field? -x -x Solution or Explanation Remember that positive charges (holes) would move in the direction of conventional current (in the direction of E parallel ), but negative charges (electrons) move opposite to E parallel . Read the eBook Section 21.4 2. 9/9 points | Previous Answers MI3 21.4.P.066 CH21-HW04-FALL2010 (Homework) Rachel Pereira PHYS 272-Fall 2011, Fall 2011 Instructor: Virendra Saxena Web Assign The due date for this assignment is past. Your work can be viewed below, but no changes can be made.
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CH21-HW04-FALL2010 - 1 2/14/11 CH21-HW04-FALL2010 WebAssign

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