Magnetism

• A magnet is a material that can attract metallic objects
• The molecules in magnets are arranged in a certain order
• Permanent magnets produce a good magnetic field
• Permanent magnets = you can see
• Professor Hans Christian Oersted coined the term electromagnetism in 1820
• Am electromagnet is temporary and is called an artificial magnet
• Electromagnets is use to transmit signal
• Electromagnets is also use for industrial purposes
• Electromagnets run electric toys
• Energy in physics is the capacity for doing work
• Electrical energy is one of the most common and useful forms of energy
• The faster the electrons move the more electrical energy they carry
• An electromagnet is a type of magnet in which an electric current produces the magnetic field
• electromagnets usually consist of wire wounds into a coil
• energy is said to be an important aspect pf modern living