An electromagnet can be made stronger by...
1. Increasing the number of turns in the wire coil: A larger number of turns in the wire coil increases the magnetic field strength of the electromagnet.
2. Increasing the current flowing through the wire coil: The stronger the current, the stronger the magnetic field generated by the coil.
3. Using a stronger magnetic core: The core material can be chosen to optimize the magnetic field strength of the electromagnet.
4. Using thicker wire: A thicker wire will have a lower resistance and therefore allow a higher current to flow, resulting in a stronger magnetic field.
5. Increasing the voltage: For a given resistance and number of turns, increasing the voltage will increase the current flowing through the wire coil, resulting in a stronger magnetic field.