If the electric field in SIunit is given by E = 8i + 4j + 3k, calculate the electric flux through a surface of area 100 units lying in the xy plane.
According to question Area vector, ā = 100k; where k is unit vector along z-axis.
now flux ø = E•ā = (8i+4j+3k)•(0i+0j+100k) = 300 wb.