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Category: 3. Electromagnetism

  • Hall Effect Sensor

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    misamaliraza94
    in

    We could not end this discussion on Magnetism without a mention about magnetic sensors and especially the very commonly used Hall Effect Sensor. The hall effect sensor is a type of magnetic sensor which can be used for detecting the strength and direction of a magnetic field produced from a permanent magnet or an electromagnet with…

  • Electromagnetic Induction

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    misamaliraza94
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    When a DC current passes through a long straight conductor a magnetising force and a static magnetic field is developed around it. Electromagnetic induction uses the relationship between electricity and magnetism whereby an electric current flowing through a single wire will produce a magnetic field around it. If the wire is wound into a coil,…

  • Magnetic Hysteresis

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    misamaliraza94
    in

    The lag or delay of a magnetic material known commonly as Magnetic Hysteresis, relates to the magnetisation properties of a material by which it firstly becomes magnetised and then de-magnetised. Ferromagnetic materials when subjected to a temporary magnetic field can exhibit a lag or delay in the demagnetisation process due to the material from which…

  • The Electromagnet

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    misamaliraza94
    in

    A simple electromagnet can be created by wrapping a coil of wire around a soft iron core, such as a large nail. The electromagnet is a type of temporary magnet in which its magnetic field is produced by electric current and to concentrate the magnetic field, the wire of an electromagnet is wound into a…

  • Electromagnetism

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    misamaliraza94
    in

    In the Magnetism tutorial we looked briefly at how permanent magnets produce a magnetic field around themselves from their north pole to their south pole. The force of electromagnetism is the basic force for all the other forces governing the interaction between atoms and molecules producing the property we know as electrical charge. While permanent…

  • Magnetism

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    misamaliraza94
    in

    Electromagnetism is the force produced when an electrical current flows through a simple conductor such as a piece of wire or cable. While magnets can be made from ferromagnetic materials which attract (and repel) other materials, mainly metals. Magnetism is the force exerted by magnets as they attract or repel each other. A small magnetic field…