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e) simple electromagnets and magnetism The electromagnet is a special type of magnet Electromagnets only exert a magnetic force when they
When current is removed, the magnetic field disappears One way an electromagnet differs from a permanent magnet is that you can switch an electromagnet's field
What is the unit for Magnetic flux density? [1] Tesla (T) 35 A bar magnet has a length of 0 15m and is connected to a circuit carrying a current of
We can use electricity to make magnets which are called electromagnets An electromagnet is a type of magnet in which the magnetic field is produced by the flow
Magnets •Materials that attract other and electromagnets •Permanent or Temporary Magnets •Laws of magnetic attraction and repulsion
Temporary magnets are not magnetic all the time An electromagnet is a kind of temporary magnet It can be turned on or off When it is connected to an electric
Electropermanent holding electromagnets with incorporated magnet: The attraction and holding of the ferromagnetic material is made by permanent magnets
Describe the relationship between electricity and magnetism • Compare an electromagnet to a bar magnet ENERGY USE AND DELIVERY – LESSON PLAN 3 3