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Electromagnets. What is magnetism? Created by moving electrons Has north and south poles. What is magnetism?. In magnetic materials like Iron Groups of atoms join together The magnetic field of each atom adds together to create a larger magnetic field. How do you make a magnet?.
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Electromagnets • What is magnetism? • Created by moving electrons • Has north and south poles
What is magnetism? • In magnetic materials like Iron • Groups of atoms join together • The magnetic field of each atom adds together to create a larger magnetic field
How do you make a magnet? • In unmagnetized iron, the magnetic fields of the domains point all different directions • To create a magnet
Electromagnets • Electricity and magnetism are related • Electric current in a wire creates a magnetic field
Electromagnets • Creates a magnetic (force) field
Electromagnets • A coiled wire creates a greater magnetic field
Electromagnets • One use of electromagnets is doorbells
Electromagnets • Scrapmetal cranes also use electromagnets
Electromagnets • Loudspeakers are also electromagnets
Electromagnets • House telephones are also electromagnets
Electromagnets • Energy transfer • Electromagnets transfer what kind of energy to which? • To _____________? • Creates a force that can move iron things