Question

Please give a detailed explanation. Thank you!

How do you find the electric field lines from the field vectors?

How do you find the electric field vectors from the field lines?

Answer 1

1). Electric field lines are the imaginary lines drawn for which a unit positive charge tends to move. Hence field lines are in the Direction of a given electric field vector.

2). Tangent drawn at a given point on electric field line gives electric field vector. Also strength of electric field in a given region can be found by number of field lines or density of field lines in that region. More the number of field lines, more is the strength of electric field vector.