HELP:) Electric Field lines on MatLab (solving fields given coordinate points)
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Currently I have used and edited a code that I have found on creating electric field lines on MatLab, I have use two test points at set coordinates with set charges [1 -1], yet the field lines that I get on my solution is incorrect. The direction of the lines should be all away from positive and towards the negative charges. Please help me fix this code!
x=[3 8];
y=[5 5];
q=[-1 1];
% Coulumb's number
ke = 8.9875517873681764e9;
xi=linspace(0,10,33);
yi=linspace(0,10,33);
[XI YI] = meshgrid(xi,yi);
zi = complex(XI,YI);
z = complex(x,y);
[ZI Z]=ndgrid(zi(:),z(:));
dZ = ZI-Z;
Zn = abs(dZ);
E = (dZ./Zn.^3)*(q(:)*ke);
E = reshape(E,size(XI));
En = abs(E);
Ex = real(E);
Ey = imag(E);
figure;
quiver(XI,YI,Ex./E,Ey./E);
hold on;
plot(x,y,'or');
axis equal;
Thank you,
3 Comments
Rik
on 23 Apr 2020
Why did you remove your question content? Now it has become utterly useles. Even old questions can be very useful if they happen to solve the exact problem you're having.
Answers (2)
Matt
on 13 May 2016
In your line quiver(XI,YI,Ex./E,Ey./E); change E to En.
You are currently dividing by a complex number.
0 Comments
Antonio Cedillo Hernandez
on 21 Apr 2020
Here you have the full MATLAB code explained (in spanish but the first comment is the code): https://www.youtube.com/watch?v=k9srU6aQfL0
0 Comments
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