1) For a positive point charge, the lines radiate ………. . While, for a negative point charge, the lines converge …………. .

For a positive point charge, the lines radiate outwards, while for a negative point charge, the lines converge inwards.

Explanation:

A single point charges produces an electric field which has a radial shape.The sign of a charge determines the the direction of the field. In Positive charge have the direction of field is out of the charge and for negative charge, the direction of field is towards the charge.This behavior is in relation to how a positive test charge will experience in a field.