Force Field Differences
What are some differences between electric fields and
magnetic fields, as well as electric fields and gravity fields? Similarities?
All fields are represented by arrows showing the direction of the field at
a given point. If we connect these arrows tip to tail, we form field
lines. Field lines do not cross. Electric field lines begin on positive
and end on negative charges. Magnetic field lines are closed loops that
have no beginning or end. Both electric and magnetic fields show
attraction and repulsion. Gravitational fields only attract. The field
lines point toward the central massive object.
---Nathan A. Unterman
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Update: June 2012