This means that their magnetism is there all the time and cannot be turned on or off as it can with an electromagnet. Converting a magnet to a non-magnet is called demagnetisation. Magnets are ...

It shows how iron filings reveal the magnetic field around a magnet, how charged objects create electric fields that can attract materials, and how gravity creates a gravitational field that pulls ...

and therefore can’t generate that magnetic field. On a much smaller scale, bar magnets have a similar field shape, and it ...

How a Generator Works When an electric current flows through a wire, it generates a three-dimensional magnetic force field around the wire, similar to that surrounding a bar magnet. Magnets are ...

Save guides, add subjects and pick up where you left off with your BBC account. A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron ...

Using an XMC1100 microcontroller development board and a TLV49 3D magnetic sensor, the device is able to track the poles of a magnet in real-time and produce an approximation of what the field ...

Image Source: NCERT Textbook Figure (a) shows the magnetic field lines a bar magnet and figure (b) shows magnetic field due to a current-carrying finite solenoid The larger the number of field ...

Some of the commonly known ideas regarding magnetism are: (i) The earth behaves as a magnet with the magnetic field pointing approximately from the geographic south to the north. (ii) When a bar ...

The magnetic field lines of a bar magnet can be viewed by using compasses or by shaking iron filings onto a platform above the magnet. Place the magnet on top of the paper in view of the document ...