12.5 Ampère’s Law
The line integral of field around a closed path fixed by the enclosed current, exploiting symmetry to handle thin and thick straight conductors.
3 exercises
12.5 Exercise 1
Consider using Ampère’s law to calculate the magnetic fields of a finite straight wire and of a circular loop of wire. Why is it not useful for these calculations?
12.5 Exercise 2
Is Ampère’s law valid for all closed paths? Why isn’t it normally useful for calculating a magnetic field?
12.5 Exercise 7
A long, straight wire of radius R carries a current I that is distributed uniformly over the cross-section of the wire. At what distance from the axis of the wire is the magnitude of the magnetic field a maximum?
Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.