To build the electromagnet described in our Magnets and Electromagnets experiment If you could see the magnetic field around a wire that has electricity
In technical terms, every coil of wire increases the "magnetic flux density" (strength) of your magnet. The magnetic field on the outside of the coil resembles
While the coil of wire would make a magnetic field without the steel core, it wouldn't be nearly as strong. The ferromagnetic steel material helps to “
