Why do electric field lines begin on positive charges and end on negative charges?

Answer 1

imposter

Answer 2

The field lines describe the direction that a positive test charge would go if placed in that field. If a positive test charge was placed near another positive charge, it would go away from the positive charge. Therefore, field lines are pointed away from positive charges. On the other hand, if a positive test charge was placed near another negetive charge, it would go towards it. Therefore, field lines are pointed towards negetive charges.