ch29-p091 - B is the magnitude of the field at the left...

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

View Full Document Right Arrow Icon
91. We use Ampere’s law. For the dotted loop shown on the diagram i = 0. The integral G G Bd s z is zero along the bottom, right, and top sides of the loop. Along the right side the field is zero, along the top and bottom sides the field is perpendicular to ds G . If A is the length of the left edge, then direct integration yields G G A Bd s B ⋅= z , where
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: B is the magnitude of the field at the left side of the loop. Since neither B nor A is zero, Amperes law is contradicted. We conclude that the geometry shown for the magnetic field lines is in error. The lines actually bulge outward and their density decreases gradually, not discontinuously as suggested by the figure....
View Full Document

Ask a homework question - tutors are online