Question

What is the definition of electric field lines?

Answer 1

Electric field lines:

1. Michael Faraday's convenient (though imaginary) concept of an electric field line is commonly used to represent an electric field.
2. It should be noted that, while the field line is fictitious, the field it represents is not.
3. An electric field line is an imaginary line or curve drawn through a region of space such that the direction of the electric vector at any point is tangent to it.
4. An electric field line is also the path taken by a positive test charge when it is placed in an electric field.
5. A field line is, in fact, a space curve, which is a three-dimensional curve.