Shown on the right is the cross-section of an infinitely long cable extending in the z-direction that has a radius R and uniform current density j (current per cross-sectional area) that flows in the negative z-direction, but with a portion of it being carved out. The carved-out portion forms an infinitely long cylindrical hollow whose radius is R/2 as shown in the figure. (a) Find the magnetic field, both magnitude and direction, at point A. R B (b) Find the magnetic field, both magnitude and direction, at point B.

Shown on the right is the cross-section of an infinitely long cable extending in the z-direction that has a radius R and uniform current density j (current per cross-sectional area) that flows in the negative z-direction, but with a portion of it being carved out. The carved-out portion forms an infinitely long cylindrical hollow whose radius is R/2 as shown in the figure. (a) Find the magnetic field, both magnitude and direction, at point A. R B (b) Find the magnetic field, both magnitude and direction, at point B.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 1P

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