Why are Field Lines Always Perpendicular to a Conducting Line?

[geyikrali]

Why the field lines are always perpendicular to the conducting line?

 

[Edward G]

Think about the structure of a conductor. An electric field line that is not perpendicular to a conducting plane will have a component parallel to it. This electric field then acts on the electrons in the conductor and they will re-arrange themselves so that there is no longer any force acting on them (i.e. the field lines are perpendicular to the conductor)

 

[geyikrali]

thank you so much