Magnetic and Electric Field Lines

[CanadaBoy]

Homework Statement

Magnetic and electric field lines are visually defined by field lines. Give three points to explain how the field lines can be used to describe the characteristics of these fields.

Homework Equations

(Not sure if needed to describe) Fm = qvBsin0, Fm = IlBsin0

The Attempt at a Solution

Farther apart lines = weaker fields?

Positive charge = fields radiate from a point charge

At every point on line, direction of field is tangeant

 

[Defennder]

The equations are not necessary. Seems okay to me.