Electric Field of Equilateral Triangle

  • #1

Homework Statement


Consider an equilateral triangle of side 15.6cm. A charge of +2.0μC is placed at one vertex and charges -4μC each are placed at the two. Determine the electric field at the centre of the triangle.

Homework Equations


E=kQ/r^2

The Attempt at a Solution


I am hoping someone can check my methodology and possibly my answer too and let me know if it looks correct. I calculated the components of the vectors and added them and I believe I have it correct.
Part 1 of Question 4.jpg
Part 2 of Question 4.jpg


Thanks
 

Answers and Replies

  • #2
kuruman
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Your methodology and numbers are correct.
 
  • #3
Thanks!!
 

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