![A metal disc rotates freely, between the poles of a magnet, in the direction indicated. Brushes P and Q make contact with the disc axle and its edge, respectively. The direction of A metal disc rotates freely, between the poles of a magnet, in the direction indicated. Brushes P and Q make contact with the disc axle and its edge, respectively. The direction of](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1371282/original_7.png)
A metal disc rotates freely, between the poles of a magnet, in the direction indicated. Brushes P and Q make contact with the disc axle and its edge, respectively. The direction of
![Magnets types . U shaped bar disc and ring with north and south poles for science. Physics material. Vector illustration Stock Vector | Adobe Stock Magnets types . U shaped bar disc and ring with north and south poles for science. Physics material. Vector illustration Stock Vector | Adobe Stock](https://as1.ftcdn.net/v2/jpg/04/92/25/70/1000_F_492257056_ftdJlhnuY97siKxjp0p6k5qJewft05lO.jpg)
Magnets types . U shaped bar disc and ring with north and south poles for science. Physics material. Vector illustration Stock Vector | Adobe Stock
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Amazon.com: AZ Industries Extra Strong 2" Diameter Ceramic Hard Ferrite Disk Disc Magnet, Multi-Pole Magnetized, 6-Pack Grade 8 (More Powerful Version of Our Standard Magnet) : Industrial & Scientific
![magnetics - Is it possible that north and south poles of a disc-shaped magnet change position over time? - Electrical Engineering Stack Exchange magnetics - Is it possible that north and south poles of a disc-shaped magnet change position over time? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/mqd0z.png)