Before the 18th century, people thought that magnetism
and electricity were separate subjects of study. After the Oersted experiment electricity and magnetism were united and became a single subject called
Electromagnetism. Oersted’s experiment was grateful help of Faraday’s
electromagnetic induction. When there is
current, the magnetic field is produced and the current-carrying conductor
behaves like a magnet. You may now wonder how was it possible for a lodestone
to behave like a magnet when there was no current passing through it.
This experiment was reversed by the faraday; he had
understood when the electromagnetic induction is occurring current will be produced. That work was a help to get a noble prize for both. In the twentieth century only we understood
that the magnetic property arises due to the motion of electrons in the
lodestone. In the circuit, the electrons flow from the negative of the battery to the positive of the battery and constitute current. As a result, it produces a magnetic field. Using Faraday’s electromagnetic induction world will change
the current production technology.
The extraordinary
change in electricity was done by both researchers. Electromagnetic
induction is used in many other fields. It has vast applications today. If we have induced a magnet, it will create a current in the circuit. We can able to see the deflection of the galvanometer.
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physics