Question

why two electric line never be intersect

Answer 1

If the lines cross each other at a given location, then there must be two distinctly different values of electric field with their own individual direction at that given location. This could neverbe the case. Every single location in space has its own electric fieldstrength and direction associated with it.

Answer 2

because then there will be two direction of electric field but it's imposible so two electric lines never be internet.

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