Amperes Law Problem

[Heath90]

Homework Statement

A constant magnetic field points to the right. B= 2.15 T. Answer in Tm .

Homework Equations

∫βDs=μI

The Attempt at a Solution

Just got introduced to these problems so not really sure how or what to integrate.3

 

[Heath90]

NM I got it the answers is zero since the perpendicular components to the field are zero, and the paralell ones go in opposite directions, and therefore cancel as well.