Magnetic fields lines are invisible but they fill the space around a magnet where the magnetic forces work on magnetic materials, and where they can attract or repel other magnets. Although we ...

First let us understand what magnets are. Electromagnets work by passing electricity through a wire wrapped around an iron core. The electric current creates a magnetic field, and when the current ...

As it turns out, the ability to nullify the powerful magnetic field ... formed from two thick plywood discs with magnets set into the edges. These magnets alternate in polarity around the discs ...

This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

Examples: Electromagnets work by passing electricity through a wire wrapped around an iron core. The electric current creates a magnetic field ... Every magnet has two poles: A north pole and ...