If the electric field is given by (5i + 4 j + 9k), the electric flux through a surface of area 20 unit lying in the y-Z plane will be

Question

If the electric field is given by (5i + 4 j + 9k), the electric flux through a surface of area 20 unit lying in the y-Z plane will be (A) 100 unit (B) 80 unit (C) 180 unit (D) 20 unit

Tardigrade Admin · Accepted Answer

Electric flux is equal to the product of an area element and the perpendicular component of E. As the surface is lying in Y-Z plane ∴ E ⋅ d A =φ =(5)(20) =100 unit

Q. If the electric field is given by $(5 i + 4 j + 9 k)$ , the electric flux through a surface of area $20$ unit lying in the $y - Z$ plane will be

100 unit

80 unit

180 unit

20 unit

Electric flux is equal to the product of an area element and the perpendicular component of $E$ . As the surface is lying in $Y - Z$ plane
$∴ E \cdot d A = ϕ = (5) (20)$
$= 100$ unit

Q. If the electric field is given by (5i+4j+9k), the electric flux through a surface of area 20 unit lying in the y−Z plane will be