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Category: Electromagnetic theory

To find the magnetic vector potential of a rotating, uniformly charged spherical shell. Vector potential, magnetic field intensity (mag induction) and current density are the most basic parameters of magnetostatics.

basic physics

Magnetic vector potential of a rotating uniformly charged shell.

by Invariance, MDASHF i@M
Posted on July 5, 2019December 6, 2020

A cylindrical wire carrying current I. Two situations arise. Case A: uniform surface current on the outside surface. Case B: a volume current density that depends upon radial distance from axis of wire. Whats the magnetic field of such a configuration?

basic physics

Problem 5.13 Application of Ampere’s Law.

by Invariance, MDASHF i@M
Posted on June 27, 2019November 28, 2019

Ampere’s law application: infinite surface current, diagram. An infinite sheet of current in xy plane with Amperian loop. We like to determine its magnetic field by Ampere's Law.

basic physics

Example 5.7; Application of Ampere’s law.

by Invariance, MDASHF i@M
Posted on June 25, 2019June 28, 2019

The northern light or aurora is an electromagnetic phenomenon, produced due to motion of charged cosmic particles entering earth's magnetic field.

basic physics

Helmholtz theorem in electrodynamics, Gauge transformation.

by Invariance, MDASHF i@M
Posted on November 3, 2018November 22, 2018

This image shows the fabulous colors cities wear at night. And it all comes from electromagnetic waves. Our topic today is an attempt at understanding the deeper formal frame work of electromagnetic waves.

basic physics

Helmholtz theorem. Scalar and vector potentials

by Invariance, MDASHF i@M
Posted on November 2, 2018November 26, 2018

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