How do we draw electric field lines for a negative charge in a vacuum?

AI Thread Summary
Electric field lines around a negative charge in a vacuum are drawn inward, indicating that the negative charge attracts positive charges. This contrasts with positive charges, which have field lines radiating outward. The discussion also touches on the concept of free body diagrams, emphasizing that they do not include forces exerted by the body itself but rather the forces acting upon it. The interaction between the positive and negative charges is highlighted, clarifying how their fields influence each other. Understanding these principles is crucial for accurately representing electric fields in physics.
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Suppose we have two charges in vacuum. They are positive and negative. If we want to draw the electric field lines around the negative charge. Do we draw the lines inward (negative) or outward (field lines produced by the +ve on -ve). I remember that free body diagram on a bidy does not include forces produced by the body itself but the forces applied on it.. What about in this situation? . Thanks to whoever responds!
 
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ehabmozart said:
Suppose we have two charges in vacuum. They are positive and negative. If we want to draw the electric field lines around the negative charge. Do we draw the lines inward (negative) or outward (field lines produced by the +ve on -ve). I remember that free body diagram on a bidy does not include forces produced by the body itself but the forces applied on it.. What about in this situation? . Thanks to whoever responds!

See :

http://www.physicsclassroom.com/class/estatics/u8l4c.cfm
http://www.dummies.com/how-to/content/physics-drawing-electric-field-lines.html
 

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