- #1
Jrlinton
- 134
- 1
Homework Statement
So this was a problem worked in class by the professor in class.
Find the net electric field at the origin due to the arcs
Homework Equations
L=2πr/4
λ=q/L
E=kQ/r2
The Attempt at a Solution
So the professor gave the answer using the fromula
Enet=λ1(2sin45°)/(4πε0r1)+λ2(2sin45°)/(4πε0r2)+λ3(2sin45°)/(4πε0r3)
I can understand the formula except for where the 2sin45° comes from. I mean the arc is a quarter circle of 90° in the second quadrant but I am unsure where this term comes from and how it would change if the parameters of the problem were to change.