Page 18 - Electrostatics-11
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© GC Shiba
☻ Two electric lines of forces never intersect. If they intersect each other, there
must be two directions of electric field intensity at the point of intersection
which is impossible.
Electric flux: Electric flux is the number of electric lines of force passing normally
2
-1
through a certain area. It is denoted by . Its SI unit is Nm C .
Electric flux density: Electric flux density is the number of electric lines of force
passing normally through unit area. It is denoted by E.
Electric flux density is measured by the electric intensity since the lines of force
are closer to each other in the high electric intensity region and away from each
other in the low electric field.
Mathematically, =
∴ = ×
17 Electrostatics
