# Homework Help: Desperate for help !

1. Jan 22, 2010

### Alieneater

Desperate for help!!!!!!!!!!!!!!!!

1. The problem statement, all variables and given/known data

I am doing an electromagnet project. I am a bit lazy and was asking if you guys could give me a list of ALL the materials I need to compete in the science fair. I'm in 10th grade, and my question is which factor affects strength of electromagnet the most. Things like # of coils or thickness of wire.

I would be extremely happy if you guys would help.

2. Relevant equations
none

3. The attempt at a solution I am having major stress in my life, and I just need someone to give me a list so I can go to the store and buy those materials.

2. Jan 22, 2010

### Senjai

Re: Desperate for help!!!!!!!!!!!!!!!!

Do your research, we dont give out answers here. Look up some articles on electromagnetism to look at what determines magnetic field strength and so forth.

http://www.physicsclassroom.com/ might be a good place to start.

~Senjai

Edit: shouldnt be too hard, the formula is $$B = \mu_0(\frac{N}{l})I$$ Look for the definition of magnetic field strength, if thats what your being asked to interpret.

3. Jan 22, 2010

### Staff: Mentor

Re: Desperate for help!!!!!!!!!!!!!!!!

As has been said, we don't do your work for you. But I can point you to an introductory article that should get you started:

http://en.wikipedia.org/wiki/Electromagnet

Let us know if you have specific questions about the article.