Is an electromagnet a temporary or a permanent magnet?

April 17, 2023

Veerendra

Physics

Is an electromagnet a temporary or a permanent magnet? Electromagnets:A permanent magnet is a magnet that retains its magnetion. A small permanent magnet can be used to hold notes onto the door of a refrigerator. Neodymium magnets are very powerful perme…

How does an electric bell work using electromagnets?

Nov. 16, 2022

Veerendra

Physics

How does an electric bell work using electromagnets?Electromagnets have a wide range of uses in all sorts of devices. Can you think of some devices from everyday life where we use electromagnets? Electromagnets are used in cranes to pick up cars in scra…