In my book following points have been given
- Due to the conservative nature of electric field, the electrostatic field lines will not form a closed loop. I want to ask how forming a loop makes if non conservative?
- Field lines have tendency to contract in length (longitudinal contraction) like a stretched elastic string.The lateral pressure between field lines explains the mutual repulsion between like charge. This somewhat implies electric field line possess physical existence which they don't, or do they? If not why have such physical properties like contraction and pressure been given to them in their description.