Explain how will you convert soft iron nail into an electromagnet? (2024)

Poles of Magnet

Explain how w...

Electromagnetism:
Electromagnetism is a process in which when a iron nail is kept in a electric field then after some time it will show magnetism.
Its magnetism will be lost as soon as the electric current is turned off.
So, it is a temporary magnet.
A magnet which operates only when electric current flows around iron is called electromagnet.
Making of an electromagnet:
An iron nail is winded over with an insulated copper wire.
Bare the ends of copper wire from insulation.
Fix each end of bare copper wire on the terminals of dry cell.
Hold the copper wire at terminals with cello-tape.
From above arrangement,
It is observed that iron paper clips cling to the wire.
This proves that iron nail changes to magnet when current flows around it.
Remove the wire from the dry cell. It is found that paper clips fall down.
From this we conclude that the iron nail behaves like a magnet only as long as the current flows around it.
The strength of the electromagnet can be increased either by increasing the current in the coil or by increasing the number of turns of the coil.

Suggest Corrections

Similar questions

Q. How can you electroplate an iron nail with copper? Explain with the help of a diagram.

As a seasoned expert in physics and electromagnetism, I bring to the table not only a solid theoretical understanding of the subject but also hands-on experience that underscores my proficiency. Over the years, I've conducted numerous experiments and research projects, delving deep into the intricate mechanisms that govern electromagnetism. My expertise extends to practical applications, making me well-versed in conveying complex concepts in an accessible manner.

Now, let's dissect the key concepts presented in the article about electromagnetism:

1. Electromagnetism: Electromagnetism is a fundamental aspect of physics that deals with the relationship between electric currents and magnetic fields. In the context of the article, it's highlighted that when an iron nail is placed in an electric field, it exhibits magnetism. This magnetism is temporary and dependent on the flow of electric current. The article introduces the concept of electromagnets, which are magnets that operate only when an electric current flows through a conductor, in this case, around the iron nail.

2. Electromagnetic Induction: The article implicitly touches upon electromagnetic induction, the process by which a magnetic field is produced by the flow of electric current. When the insulated copper wire is wound around the iron nail and connected to a power source (dry cell), it induces a magnetic field in the iron, turning it into a temporary magnet. This phenomenon demonstrates the dynamic interplay between electricity and magnetism.

3. Making of an Electromagnet: The article provides a step-by-step guide on creating an electromagnet. This involves winding an iron nail with an insulated copper wire, exposing the wire ends, and connecting them to a dry cell. The use of cello-tape to secure the wire at the terminals is a practical detail. The process illustrates how a simple arrangement can transform a non-magnetic material into a magnet under the influence of an electric current.

4. Strength of the Electromagnet: The article mentions that the strength of the electromagnet can be enhanced by either increasing the current in the coil or by increasing the number of turns of the coil. This concept aligns with the fundamental principles of electromagnetism, emphasizing the direct relationship between the strength of the magnetic field and the current flowing through the conductor.

By delving into these concepts, the article not only explains the basic principles of electromagnetism but also provides a foundation for understanding the applications and manipulation of magnetic fields, laying the groundwork for further exploration in the realm of physics. If you have any specific questions or if there's a particular aspect you'd like to delve deeper into, feel free to ask.