Area Vector

#) Area Vector: Area Vector is a scalar quantity, but in some the problems, it is convenient to treat it as vector.

*) A small area can be treated as planar.

*) As normal to the plane specifies the orientation of plane, therefore, the direction of planar area vector is along its normal.

*) By convention, the vector associated with every area element of a closed surface is taken to be in the direction of the outward normal.

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