Intro physics question (electric fields)

  • Thread starter jaejoon89
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  • #1
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A figure showing electric field lines has two charges, q and -q. There are 24 lines emanating from the +q charge. 15 of these lines terminate at -q. There are 24 lines terminating at the q- charge. What is the net flux through the surface surrounding the two charges?
 

Answers and Replies

  • #2
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Well it is a dipole with the two charges being of equal magnitude, so wouldn't the net flux be 0?
 
  • #3
Defennder
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It's a closed surface right? Then just apply Gauss law. A more "conceptual" approach is to count how many lines are entering the closed surface and how many are exiting. Then find the net number of lines exiting the surface.
 

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