Description
Mounted on a plastic box. Working on 6 – 9 V DC.
Demonstrates change in strength of magnet with change in voltage.
Features
- An electromagnet is made of a coil of wire, often with a core of a ferromagnetic material like iron, which amplifies the magnetic field.
- The magnetic field is created when an electric current passes through the coil.
- The strength of the electromagnet can be changed by varying the input voltage.
- Unlike a permanent magnet, an electromagnet can be turned on and off by controlling the flow of electricity.