P30_071 - . 040 m) ˆ k which yields ~ B = − 1 . 7 × 10...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
71. (a) As illustrated in Sample Problem 30-1, the radial segments do not contribute to ~ B P and the arc- segments contribute according to Eq. 30-11 (with angle in radians). If ˆ k designates the direction “out of the page” then ~ B = µ 0 (0 . 40 A)( π rad) 4 π (0 . 050 m) ˆ k µ 0 (0 . 80 A) ( 2 π 3 rad ) 4 π (0
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: . 040 m) ˆ k which yields ~ B = − 1 . 7 × 10 − 6 ˆ k T. (b) Now we have ~ B = − µ (0 . 40 A)( π rad) 4 π (0 . 050 m) ˆ k − µ (0 . 80 A) ( 2 π 3 rad ) 4 π (0 . 040 m) ˆ k which yields ~ B = − 6 . 7 × 10 − 6 ˆ k T....
View Full Document

This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

Ask a homework question - tutors are online