/sci/ - Science & Math

[rec & play !!ZeLOSlAhY6W No.1148844]

Quick question for anyone who has done electromagnetic theory. How do you find the direction of a magnetic field induced by a changing electric field? It's obviously perpendicular to the electric field, but that leaves a whole plane.

I am probably missing something obvious, but I don't see how one applies the right hand rule here. Pic related.

[rec & play !!ZeLOSlAhY6W No.1148879]

Bump for real science on /sci/

[Anonymous No.1148880]

gradient

[Anonymous No.1148894]

>>1148844
Write ampheres equation in diff form, then you should be able to see how the direction of E relateds the the direction of the induced B (you should have a cross product in there).

[Anonymous No.1148902]

i'd like to know the answer here.. and im not op

[rec & play !!ZeLOSlAhY6W No.1148909]

>>1148894
Why, differential form! Of course! I will go 'ave a gander.

[Anonymous No.1148931]

del x E = - dB/dt

[Anonymous No.1148934]

>>1148902
The integral form id shoing you what happens over the "total" it is doing infinite summerations and shit. This wont help you. The differntal form, witll just have dE/dt = function( B).
In this form, I can make some trial E, and see what B looks like. So Make an E along say the X axis, then see what B vector has to be s.t. teh equation matched up, this essentially tells you how B responds to E. Good luck.

ALSO, ENGINEERS ARE FAGGOTS!

[rec & play !!ZeLOSlAhY6W No.1148947]

>>1148894
Yeah, thanks. That's all that I was missing. /thread

[Anonymous No.1148956]

>>1148931
I dont think there is a negative, also you switched the fields!

http://en.wikipedia.org/wiki/Amp%C3%A8re's_circuital_law

[Anonymous No.1149031]

>>1148934
>>1148934

hahaha thanks

[Anonymous No.1149431]

look up "oliver heaviside" and "electromagnetic theory" in Google Books, setting: full view only