Electric field of a charged sphere

[ertreri]

What's the convention for writing the direction of the force field lines?

Is always in relation to positive charge?

That is, You'd put the field lines pushing inwards for a negative charge because: a positive charge would be attracted to the negative charge?

[PelletierPhysics]

@ertreri

You are right.

[T4styTHC]

@ertreri you always draw the field lines from a small positive test charge's point of view, out of positive into negative