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• ELECTRIC FLUX (Φ)

  ➢ Electric field can be quantitatively

  described using the concept of

  electric flux.

  ➢ The word flux comes from the Latin

  word Fluxus meaning "flow."

  ➢ Is a measure of the number of field

  lines passing through a surface.
• Electric Flux - scalar quantity - magnitude and direction
• Electric Flux - also considered an electric field that is uniform in both magnitude and direction
• ELECTRIC FLUX IS THE

  NUMBER OF FIELD LINES

  PASSING

  PERPENDICULARLY

  THROUGH A SURFACE
• Angle θ between

  the area vector

  and the electric

  field
• Mathematically, Electric flux is the dot product of

  the electric field and area vector.
• THE DIRECTION OF THE AREA VECTOR IS

  THE SAME AS THAT OF A VECTOR

  PERPENDICULAR TO THE AREA.

  Φ = EᐧA = EA cosθ

  where:

  θ = angle between the electric field

  and the area vector.

  Electric flux is scalar and has the unit of N•m2/C