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Maxwell's Equations

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by

Richard Datwyler

on 14 March 2016

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Transcript of Maxwell's Equations

Maxwell's Equations
Here are the main equations of electromagnetism, as stated by Maxwell.
Find the Electric field from charge inside a Gaussian surface.
Gauss's Law
Gauss's Law
No magnetice monopoles, N and S together.
Faraday's Law
Changing magentic field creates Electric field
Ampere / Maxwell Law
Find Magnetic field from current inside an Amperian loop.
Changing Electric field creates Magnetic field
Note the directions of these last two.
They both require changing fields, but Faraday's law is an 'opposing' the change.

Use the Right Hand Rule being mindful of the negative and positive signs.
While Maxwell's displacement current is in the same direction as the change.
What is the magnetic field in all four regions shown here for a charging 3.0 cm radius capacitor with a current of 1.5 A.
A
D
C
B
5 cm
5 cm
2 cm
2 cm
A
B
B
B
C
D
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