Electric Flux Definition — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Electric Flux Definition Valid for a uniform electric field passing through a flat surface. For non-uniform fields or curved surfaces, the integral form must be used. Define electric flux as the number of field lines passing through a surface. For a surface perpendicular to the field, Flux = E A. If the surface is tilted, the effective area perpendicular to the field is A eff = A cos(theta). Combine to get Phi E = E A cos(theta). E must be uniform over area A Surface must be flat theta is defined relative to the surface normal, not the surface plane Using the angle between the field and the surface plane instead of the normal vector (using sin instead of cos). Assuming flux is a vector quantity. Forgetting that flux is zero when the field runs parallel to the surface.