Module 2 : Electrostatics
Lecture 7 : Electric Flux
 

Example 4:
Calculate the flux through the base of the cone of radius $R$.

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Solution :
The flux entering is perpendicular to the base. Since the outward normal to the circular base is in the opposite sense, the flux is negative and is equal to the product of the magnitude of the field and the area of the base, The flux, therefore is, $\pi R^2 E$.

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