What are the three types of magnetism?

• A. Kinetic, Potential, Thermal
• B. Induced, Residual, Permanent
• C. Electrical, Magnetic, Gravitational
• D. Ferromagnetic, Paramagnetic, Diamagnetic

Answer: (B)

Magnetism in materials is observed in three practical ways: when an external magnetic field is applied, a material can become magnetized temporarily—that’s induced magnetism. After removing the external field, some materials retain a leftover magnetization, which is residual (or remanent) magnetism. And there are materials that remain magnetized even without any external field, known as permanent magnetism. These three cover how magnetization can appear, persist briefly, or persist long-term. The other options mix energy concepts, general forces, or classify materials by their magnetic response, but they don’t name the three ways magnetism itself can exist in a material.