मराठी
CISCEICSE ICSE Class 7
पाठ्यपुस्तक उत्तरे१०२६०
संकल्पना स्पष्टीकरण आणि व्हिडिओ२०२
अभ्यासक्रम

Electromagnet

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Topics

  • Introduction
  • Michael Faraday: A Pioneer in Electromagnetism
  • Experiment
  • Construction of an I-Shaped Electromagnet
  • Construction of a U-Shaped Electromagnet
  • Ways of Increasing the Magnetic Field of an Electromagnet
Maharashtra State Board: Class 6

Introduction:

An electric current can produce a specific type of magnetism known as electromagnetism. When electricity flows through a wire, it creates a magnetic field around it.

  • For example, it is used in instruments such as doorbells and cranes. On the other hand, magnets fixed to a pin holder or the door of a cupboard are permanent magnets.
  • Permanent magnets are made from a mixture of nickel, cobalt, and iron. For example, the material alnico is a mixture of aluminium, nickel, and cobalt. 

Uses of electromagnet

Maharashtra State Board: Class 8

Michael Faraday: A Pioneer in Electromagnetism

The British scientist Michael Faraday developed the technique of producing electricity with the help of a magnet. 

  • Faraday was born into a poor family and worked at a bookshop as a boy, where he developed his love for science by reading books.
  • He made significant discoveries in the field of electromagnetism and electricity at the Royal Institution in London.
  • Faraday’s research led to the practical use of electricity in various tools and devices, greatly affecting our daily lives.
Maharashtra State Board: Class 6

Experiment

1. Aim: To create an electromagnet and observe how magnetism is produced by electric current.

2. Requirements: Iron nail (about 10 cm long), 1-meter insulated copper wire, battery cell, pins or other magnetic objects

3. Procedure

  • Wind the insulated copper wire tightly around the iron nail, leaving some length of wire free at both ends.
  • Connect the ends of the copper wire to the battery cell to allow electric current to flow.
  • Bring pins or other magnetic objects near the head of the nail and observe.
  • Disconnect the battery and observe what happens to the pins.

Electromagnet

4. Conclusion: When the electric current flows through the wire, the iron nail becomes a magnet, and pins stick to it. When the current is stopped, the magnetism disappears, and the pins fall off. This shows that the magnetism in an electromagnet is temporary and only exists when an electric current is flowing.

CISCE: Class 10

Definition: Electromagnet

An electromagnet is a temporary strong magnet made by passing current in a coil wound around a piece of soft iron. It is an artificial magnet.

Related QuestionsVIEW ALL [57]

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Describe a simple Experiment to demonstrate that there Exists a magnetic field around a current-carrying conductor. 

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 Electromagnet ______.

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