Question

A charged particle is free to move in an electric field. It will always move along an electric line of force.

Answer 1

This statement is true.

The free particle will always move along an electric line of force.

It'll be attracted (supposing it's positive)

if the particle in vicinity has a negative charge and repelled if the charge in vicinity has positive charge.

Answer 2

Answer:

The electric force on the particle will always act in the direction of the line of force. Hence, if the particle is initially at rest then it will be accelerated along the line of force.

But if it enters with accelerated motion at an angle with the direction of the field, then its path will not be along the line of force.