Name the device used to magnetise a piece of magnetic material. Draw a labelled diagram to show the arrangement used for the magnetisation of a cylinder made of soft iron.
The device used to magnetise a piece of magnetic material is called an electromagnet. The process of magnetising a cylinder made of soft iron involves using a solenoid (a coil of wire) through which current is passed. In the diagram above: The soft iron cylinder is placed inside a solenoid. A current is passed through the solenoid, creating a magnetic field that magnetises the soft iron cylinder. The direction of the magnetic field inside the solenoid is indicated by the arrows.
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