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Electrostatics

Electric flux

• It is the total number of electric field lines of force crossing the unit surface area in a direction normal to the surface.
• The flux $\Phi$ of an electric field E, through a small area element ds is given by
Gauss’s law
• It states that the total electric flux through a closed surface enclosing a charge q is equal to times the magnitude of the charge enclosed.
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Applications of Gauss's Law

• Electric field intensity due to an infinitely long straight wire of linear charge density λ at a point which is at a perpendicular distance r from the …

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