Increase the Number of Turns: Increasing the number of turns of wire in the coil increases the magnetizing force, thus increasing the strength of the electromagnet.
Increase the Current: Increasing the current through the coil increases the strength of the electromagnet.
Increase the Core Material: Increasing the core material increases the magnetic field, thus increasing the strength of the electromagnet.
Use Soft Iron Core: Soft iron is more permeable than air, so a soft iron core increases the strength of the electromagnet.
Shorten the Core: The magnetic field is concentrated in a shorter core, thus it increases the strength of the electromagnet.
Increase the Coil Concentration: Increasing the number of coils wrapped around the core increases the strength of the electromagnet.
