Question Detail

Electric flux (Φ) is fundamentally defined as the measure of the electric field passing through a given surface. Mathematically, for a uniform electric field (E) passing through a flat surface with area (A) at an angle (θ) to the normal, the flux is Φ = E ⋅ A ⋅ cos(θ). If the field is perpendicular to the area, it simplifies to Φ = E ⋅ A.Statement I: "It is the product of electric field strength and force between charges" - Incorrect. Electric flux is not directly the product of E and F.Statement II: "It is the product of Force between charges and the product of the charges" - Incorrect. This statement describes neither flux nor a known physical quantity.Statement III: "It is the product of electric field strength and cross-sectional area" - Correct. This statement accurately describes the definition of electric flux under suitable conditions (e.g., when the field is uniform and perpendicular to the area, or as a component of the more general definition).