Who had first observed the magnetic effect of an electric current?

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Oersterd bhai ne

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The magnetic effect of electric current was discovered by H.C. Oersted in 1820. He observed that flow of electric current through a conductor produce a magnetic field around it.

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Human

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HC OERSTED...

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Oersted in 1820

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The First Observation of the Magnetic Effect of an Electric Current

The discovery of the magnetic effect of an electric current is attributed to the Danish physicist Hans Christian Ørsted. Ørsted made this groundbreaking observation in 1820 during a lecture demonstration at the University of Copenhagen.

The Experiment

During his lecture, Ørsted was demonstrating the relationship between electricity and magnetism. He had set up a circuit consisting of a battery, a wire, and a compass. The wire was connected to the battery, creating an electric circuit, and the compass was positioned nearby.

The Observation

As Ørsted passed the electric current through the wire, he noticed that the compass needle deflected from its original position. Furthermore, when he reversed the direction of the current, the compass needle deflected in the opposite direction. This unexpected behavior of the compass needle in response to the electric current was a significant revelation.

Importance of the Observation

Ørsted's observation was groundbreaking because it established a fundamental connection between electricity and magnetism. It demonstrated that an electric current produces a magnetic field around it, and this magnetic field can influence nearby objects like the compass needle.

Contributions to Electromagnetism

Ørsted's discovery laid the foundation for the study of electromagnetism and led to further investigations by other scientists, including André-Marie Ampère and Michael Faraday. Ampère expanded upon Ørsted's work, developing mathematical equations to describe the relationship between electric currents and magnetic fields. Faraday, on the other hand, explored the reverse phenomenon, discovering electromagnetic induction, which established that a changing magnetic field could induce an electric current.

Significance in Modern Technology

The observation made by Ørsted paved the way for the development of various technologies that rely on the interaction between electricity and magnetism. These technologies include electric motors, generators, transformers, and many other applications in electronics and power distribution.

Conclusion

In conclusion, Hans Christian Ørsted was the first to observe the magnetic effect of an electric current in 1820. His experiment with a wire, battery, and compass revealed that an electric current produces a magnetic field, which was a crucial discovery in the field of electromagnetism. This observation laid the foundation for further investigations and developments in the field and has had a significant impact on modern technology.

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