1.A magnet can attract magnetic material (e.g. iron, steel, cobalt or nickel) or another magnet placed near it 2.There is a magnetic field around a magnet 3.Like poles repel (north/north) 4.Opposite poles attract (north/south) Magnets Magnets Magnets
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1.A magnet can attract magnetic material (e.g. iron, steel, cobalt or nickel) or another magnet placed near it 2.There is a magnetic field around a magnet.
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1. A magnet can attract magnetic material (e.g. iron, steel, cobalt or nickel) or another magnet placed near it
2. There is a magnetic field around a magnet
3. Like poles repel (north/north)4. Opposite poles attract (north/south)
Opposite poles attractOpposite poles attractOpposite poles attractOpposite poles attract
Opposite poles attract
Like poles repelLike poles repelLike poles repelLike poles repel
Like poles repel
MagnetsMagnetsMagnetsMagnets
Magnets
1. When an electric current flows through a coil of wire there is a magnetic field around the wire. One end of the coil becomes a north-seeking pole and the other end becomes a south-seeking pole. This is called an electromagnet.
2. Reversing the current in an electromagnet reverses the poles of the electromagnet.
3. Electromagnets are used in simple motors and circuit breakers