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Physics Help?
The drawing shows two positive charges q1 and q2 fixed to a circle. At the center of the circle they produce a net electric field that is directed upward along the vertical axis. Determine the ratio q2/q1.
Figure: http://demo.webassign.net/ebooks/cj6demo/art/image...
1 Answer
- ?Lv 64 years agoFavorite Answer
"...they produce a net electric field that is directed upward along the vertical axis."
This sentence means that there are no horizontal components of net electric field.
So we can say that horizontal components of electric fields caused by q1 and q2 are equal opposite to each other
Therefore
(kq1/r^2)Sin30 = (kq2/r^2)Sin60
q1/q2 = Sin60 / Sin30
q1/q2 = (sqrt(3)/2) / (1/2) = sqrt(3)
q1/q2 = 1.732
