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What are the phenomena?
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Ancient people found out that permanent magnets can attract iron filings. They understood the…
The formation of magnetic force
Like poles repulse each other and unlike poles attract each other. Magnetic force is formed under the magnetic field.
The concept of magnetic force
In a magnetic…
The concept of magnetic levitation
Magnetic levitation makes use of its repulsive force between like poles of two magnets.
The concept of electromagnet
When electric current passes through the metal wire, it magnetizes the wire temporarily and produces a magnetic field. An electromagnet is formed. It stops…
The concept of electric motor
The basic mechanism of an electric motor and an electric generator is almost the same except its concept. An electric generator is an electrical…
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