In an electric field, from which charge do the lines of force always point?

In an electric field, the lines of force represent the direction of the electric field and how a positive test charge would move within that field. By convention, these lines of force always originate from positive charges and terminate at negative charges. This is because a positive test charge is repelled by other positive charges and attracted to negative charges.

Thus, it is correct that the lines of force point from positive to negative. This direction indicates that a positive charge would naturally move towards a negative charge, illustrating the fundamental interactions between charged particles. The convention is critical for understanding electric fields, as it helps visualize forces acting on charges, which plays a significant role in various applications in physics and engineering.