You start with the electromagnet pictured. Name three ways you can increase the strength of this electromagnet.

1. Increase the number of turns in the coil: Increasing the number of turns in the coil will increase the amount of magnetic field produced, making the electromagnet stronger.

2. Increase the current in the coil: Increasing the current flowing through the coil will increase the strength of the magnetic field produced, which will make the electromagnet stronger.

3. Use a stronger core material: Using materials with higher magnetic permeability such as soft iron, cobalt or nickel can increase the strength of the magnetic field produced, which in turn will make the electromagnet stronger.