ABSTRACT
Consider going along an electric field through a particular path. Along this path, let's add up the strength of the field pointing in the same direction. Mathematically, this summation can be expressed as https://www.w3.org/1998/Math/MathML"> ∫ Path E → ⋅ d l → https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003397496/c9619a4c-33ea-4757-afe2-97610a8ab4e4/content/math8_1.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> , where https://www.w3.org/1998/Math/MathML"> d l → https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003397496/c9619a4c-33ea-4757-afe2-97610a8ab4e4/content/math8_2.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> denotes the infinitesimal segment along the path. This is similar to the calculation of flux, which is the integration of the strength of the electric field parallel to the normal of some specified surface.
