Discover how to derive the SI base units of electric flux step-by-step. Understand the relationship between electric field, area, force, charge, and fundamental SI units. It is expressed using the Greek symbol Phi: Φ. Talking about the unit, the SI base unit of electric flux is volt-metres (V m) which is also equal to newton-metres squared per coulomb (N m 2 C -1). Besides, the base units of electric flux are kg·m 3 ·s -3 ·A -1. Electric flux is a fundamental concept in physics that helps us understand and quantify the electric field passing through a given surface. It provides a means to describe the flow of electric field lines through an area. Electric flux forms the basis of Gauss's Law, to calculate the net charge enclosed inside a given Gaussian surface, which says that the flux through a surface will be the result of the total (or net) charge enclosed inside it. In this article, we will learn about the basics ... An electric field → E =4x ^i −(y2 +1) ^j N/C passes through the box shown in figure. The flux of the electric field through surface ABCD and BCGF are marked as ϕ1 and ϕ11 respectively.