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## Main Question or Discussion Point

Hello

I would appreciate if someone can refresh my mind with the principle of superposition..

I would appreciate if someone can refresh my mind with the principle of superposition..

- Thread starter spock9000
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- #1

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Hello

I would appreciate if someone can refresh my mind with the principle of superposition..

I would appreciate if someone can refresh my mind with the principle of superposition..

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Superposition Principle

The Superposition Principle states that net electric field produced at any point by a system of charges is equal to the vector sum of all individual fields, produced by each charge at this point

http://physics-help.info/physicsguide/electricity/electric_field.shtml

- #4

Khashishi

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[itex]A=f(a)[/itex]

[itex]B=f(b)[/itex]

then

[itex]A+B=f(a+b)[/itex]

This is the superposition principle and it works for any sort of linear or approximately linear problem. Electromagnetism and quantum mechanics are linear. More specifically, the electric field is a linear function of the charge distribution.

[itex]\textbf{E}(\vec{x})=f(\rho(\vec{x}))[/itex]

So, if you know the electric field for two charge distributions, you can easily figure out the electric field for the combined charge distribution.

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