qz7f08sol - October 31, 2008 PHY2054 Discussion-Fall 08...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: October 31, 2008 PHY2054 Discussion-Fall 08 Quiz 7 (Chapter 19.7-20.8) Name: UFID: *1. (5pts) Four long, parallel wires carry equal currents of 2.00 A. The wires are directed perpendicular to the sheet and they pass the corners of a square with edge of length 0.500 m. The direction of the current is into the sheet for wire A and B and out of the sheet for wire C and D. Calculate the magnitude and direction of the magnetic field at point P, located at the center of the square. According to the 2 nd right hand rule, the magnetic fields due to the current A and D are directed to wire B, and the field due to the current B and C are directed toward D. Taking +x direction to the right and +y upward, we have B A = B D = (- I/(2r)cos45, - I/(2r)sin45) B B = B C = (+ I/(2r)cos45, - I/(2r)sin45) The net magnetic field is the sum of the field due to each current. Therefore B = B A +B B +B C +B D = (0, -4 I/(2r)sin45) = (0,-4410-72/(2(20.25 2 )) = (0, -3.2010)) = (0, -3....
View Full Document

This note was uploaded on 12/13/2011 for the course PHY 2054 taught by Professor Avery during the Fall '08 term at University of Florida.

Page1 / 3

qz7f08sol - October 31, 2008 PHY2054 Discussion-Fall 08...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online