I see. So what you're saying is that I should build a solenoid of some sort and maybe place an iron bolt inside that is spring loaded? That is very interesting. Do they sell these things or do you think it's better for me to make it myself?
edit: lol nvm, you don't have to answer that...
I am making a locking mechanism with a very powerful magnet. The electromagnet in the diagram is held in place. Basically when the electromagnet turns on it will push the permanent magnet out. Here is a picture of what I want to do.
http://www.mypicx.com/05202009/fas/
I think it's positive to negative...http://en.wikipedia.org/wiki/Electric_current#Current_flow I think positive means there is an abundance of electrons so they move to a negative? Not sure...
Anyways, do you guys think my idea will work? If I turn the electromagnet on, will the poles stay...
Not sure if this should be in engineering or physics section. Sorry if I got it wrong.
How do I determine the north and south pole in an electromagnet? Do electromagnets have a constant N or S pole?
I am making a locking device where a neo magnet will hold a lid down tightly by sticking...