**. A long, cylindrical wire has the cross-section of an annulus, i.e. region between two concentric circles, see the shaded area in figure a). The outer radius of the wire is 2R, the inner diameter is R. Current I flows along the wire (perpendicularly into the page) in uniform distribution between radii R and 2R. a) b) xI R XI R 2R 2R a) Find and plot the magnitude of the magnetic field as a function of distance r from the symmetry axis of the wire.

**. A long, cylindrical wire has the cross-section of an annulus, i.e. region between two concentric circles, see the shaded area in figure a). The outer radius of the wire is 2R, the inner diameter is R. Current I flows along the wire (perpendicularly into the page) in uniform distribution between radii R and 2R. a) b) xI R XI R 2R 2R a) Find and plot the magnitude of the magnetic field as a function of distance r from the symmetry axis of the wire.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 101AP: Unreasonable results Frustrated by the small Hall voltage obtained in blood flow measurements, a...

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