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Consider a point charge 3Q is located at the origin. Divergence of the electric flux density produced by the charge is +3 -3 non of choices

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter6: Gauss's Law

Section: Chapter Questions

Problem 5CQ: Two concentric spherical surfaces enclose a point charge q. The radius of the outer sphere is twice...

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Ising model of Ferromagnets

The Ising model is one of the easiest and most famous theoretical models for ferromagnetism in statistical mechanics. When a group of atomic spins aligns such that their magnetic moments are pointed in the same direction and produce a strong permanent magnetic moment in macroscopic size, the phenomenon is called ferromagnetism. The relative permeability of these magnets is greater than unity and increasing magnetization with the applied external field. Even in the absence of an external magnetic field, these substances retain spontaneous magnetization. An example of ferromagnets is iron.

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Consider a point charge 3Q is located at the origin. Divergence of the electric flux
density produced by the charge is
-3
non of choices

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