Final answer:
Electromagnets and bar magnets are two types of magnets. Electromagnets are created by a current, while bar magnets occur in nature. Both types have fixed strengths, attract iron, and have polarity.
Step-by-step explanation:
Electromagnets and bar magnets are two different types of magnets. Electromagnets are created by a current, while bar magnets occur in nature. Both electromagnets and bar magnets have fixed strengths and attract iron. Additionally, they have polarity, meaning they have north and south poles that cannot be separated and for which like poles repel and unlike poles attract.