Recent content by Joan

Hi again, Now I was wondering if someone could tell me if this is reasonable, for the x component of the vector potential A(r) I have found that Ax = -u*I*xhat/(4*Pi) ln((y+sqrt(x^2+y^2+z^2)/(-x+sqrt((-x)^2+y^2+z^2))) I'm not exactly convinced. I find similar for y but for z i think it is...

cheers!

No, I just meant the greek letter. I think it does just mean a small increment but I missed todays lecture and I'm not quite sure, trying to catch up now. Thanks for all your help

I see what you mean. Thanks Last thing, to your knowledge does little Xi ever have a particular meaning in magnetostatics or does it just refer to some small increment?

That was fast thanks! Yep, that's what I was trying to say. I am only dealing in magnetostatics at the moment so I think charge must be conserved, otherwise the magnetic field would vary, is that right? Also, could you give me an example of this situation? I'm having trouble visualising it...

Homework Statement I am trying to interpret a diagram of a current distribution, with a view to finding the vector potential. I 'm afraid I don't know how to put images here, so I will try to describe it. In the diagram the x-y plane faces the viewer. In the x direction the diagram shows...

Hello, thankyou for your comments, I'm afraid I'm still stuck though... I'm sure I'm being fairly thick here. Gauss's law tells us that the flux through the chosen Gaussian surface (from the net electric field) is equal to the charge enclosed by the Gaussian surface divided by the permittivity...

Hey thanks. In that case should I just leave integral (E.da) = rho/epsilon, ie leaving rho as is?

Hi, I hope this is the appropriate place and format etc. One of the questions I have to answer is this: Use Gauss's law to obtain the field, everywhere, of charge of uniform density roe, occupying the region a<r<b, where r is the distance from the origin. I am completely flummoxed as to what...