Question
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.
Angle for q1 is 30 degrees from diameter.
Angle for q2 is 60 degrees from diameter.
Angle for q1 is 30 degrees from diameter.
Angle for q2 is 60 degrees from diameter.
Answers
Arora
Are these angles above or below the diameter?
Damon
Also, is that diameter vertical or horizontal?
If vertical and charges below:
horizontal components equal and opposite
(kQ2/r^2) cos 60 = (k Q1/r^2) cos 30
Q2 cos 60 = Q1 cos 30
Q2/Q1 = cos 30/cos 60
If vertical and charges below:
horizontal components equal and opposite
(kQ2/r^2) cos 60 = (k Q1/r^2) cos 30
Q2 cos 60 = Q1 cos 30
Q2/Q1 = cos 30/cos 60