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GAUSS LAW APPLICATION

GAUSS LAW APPLICATION 

Grade:12

1 Answers

Komal
askIITians Faculty 747 Points
8 years ago
Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field.The law can be expressed mathematically using vector calculus in integral form and differential form, both are equivalent since they are related by the divergence theorem, also called Gauss's theorem. Each of these forms in turn can also be expressed two ways: In terms of a relation between the electric field E and the total electric charge, or in terms of the electric displacement field D and the free electric charge.
Integral form

Gauss's law may be expressed as
where ΦE is the electric flux through a closed surface S enclosing any volume V, Q is the total charge enclosed within S, and ε0 is the electric constant. The electric flux ΦE is defined as a surface integral of the electric field:
where E is the electric field, dA is a vector representing an infinitesimal element of area,and · represents the dot product of two vectors.

Since the flux is defined as an integral of the electric field, this expression of Gauss's law is called the integral form.

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