Directions: Identify the word that is being described in each item. Look for the answers inside the box and write your answer on the blank. electromagnet metal core wire loops 1 are simple devices that mimic the behaviour of natural magnets 2. As the electrical current moves around the of the coil, it generates a magnetic field like that of a small bar magnet 3.. Changing the for a different metal will make the electromagnet stronger or weaker. 4. Although metal are very efficient conductors of electricity, they still have some resistance to the flow of current.. flowing through the electromagnet will also 5. Changing the amount of change the field it produces.