Recent content by cb767

I making it out of iron, so I believe it should be a hard magnet. I've looked up materials with high saturation levels, but unfortunately, they are two expensive for my budget. It turns out that right now, I have all of the equipment I need, but I think I'm doing something wrong with my power...

Well, my main reason for building the electromagnet is because I need it of a certain shape. The primary problem that I've encountered is that this: I bought a regulated power supply. It has two adjustable knobs, one for voltage, and another for current. The strange thing however, is that I...

I need to build an electromagnet. I have 2500 feet of 19 gauge magnet wire, and an iron core available. I'm not sure how to get a power supply that would supply enough amps to make the magnet strong enough... Anyone have any suggestions? Caleb

I can't believe I don't remember this. Is it possible to move upwards with a constant velocity? For example, if a block weighs 20 Newtons, and I want it to go at a constant velocity of 5 m/s , could I do that with a constant force? For some reason I don't think I can, but maybe I'm just screwing...

I have to disagree with you there, in regards to the safety of high voltage power lines. I agree that microwaves are harmless when used to cook your food however. Here is my reasoning. High voltage wires such as those have an enormous electric fields around them. They can cause light bulbs to...

Hey everyone, I'm doing a physics project, and I need to construct an electromagnet with a hollow iron core. I have searched everywhere on google, and checked my physics textbook as well, but have unfortunately found nothing. I basically just need the formula of how to calculate the magnetic...