Electric field line









Electric field line

Electric field lines are a visual representation of the electric field around an electric charge.
In the case of point charge, it can be expressed in the form of spreading around the charge.
At a certain position, the direction of the electric field becomes the tangential direction of the electric field line, and the denser the electric field line, the stronger the electric field.

  1. The electric field line starts at the (+) charge and ends at the (-) charge. Or, it may start or end at infinity.
  2. When drawing lines, the number of lines is proportional to the amount of electric charge.
  3. Electric field lines do not intersect or separate from each other.
  4. The electric field line starts or ends perpendicular to the conductor surface.
  5. Electric field lines do not exist in a conductor (electric field = 0).
  6. A uniform electric field has the same distance between the lines of force.

Electric field line

Between the same kind of electric charge, a line of electric force connects and a pulling force acts.
Between different kinds of electric charges, the electric line of force does not connect and the pushing force acts.