Electric field at origin, zero or nonzero?

  • Thread starter rcmango
  • Start date
  • #1
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Homework Statement



Point charges +q and -q are placed at +50 cm and -50 cm on the x-axis, respectively. Is the electric field at the origin (halfway between the charges) zero or nonzero? If nonzero, which direction does it point?

Homework Equations





The Attempt at a Solution



If they were like charges, both positive, then I would say the electric field would be 0. I'm not sure because they are opposite polarities. Please help.
 

Answers and Replies

  • #2
38
0
Try to think of the electric field lines; if you drew them what would they look like?
 
  • #3
598
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What would happen if I were to place a charge of -q at the origin?
How about +q? Would you agree that they would move? What does
this say?
 

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