Electric Field Homework

  • Thread starter bmaia89
  • Start date
  • #1
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Homework Statement


Here it goes.
2 pontual charges (Q>0), placed in (0,a,0) and (0,-a,0): calculate de vector E(x,0,0) along xx


Homework Equations





The Attempt at a Solution


I tried to use E=1/(4*pi*epsilon naught) * Q/r2
but when i make Q/(x ex + a ey)2 and (x ex + (-a) ey)2
i don't know what to do...
(I think i have doing something wrong)
:cry:
 
Last edited:

Answers and Replies

  • #2
rl.bhat
Homework Helper
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but when i make Q/(x ex + a ey)2 and (x ex + (-a) ey)2
This step is not clear.
Here r^2 = x^2 + a^2.
Here E has the same magnitude but different direction. Take its components along X and y axis and then take the resultant.
 
  • #3
8
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:smile:
thanks
 

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