Question 73

Magnetic force can induce magnetism in particular materials.

The diagram illustrates how a steel nail, when placed in contact with a magnet, becomes magnetized itself due to the magnetic force exerted by the magnet. This demonstrates the principle that certain materials can acquire magnetic properties when exposed to a magnetic field.

A) Magnetic force causes the nail to act as an electromagnet.

This option is incorrect because an electromagnet is created by electric current flowing through a coil, which generates a magnetic field. The scenario depicted does not involve electric current but rather the magnetic induction process.

B) Magnets have a magnetic north pole and a magnetic south pole.

While it is true that magnets possess a north and south pole, this option does not directly relate to the interaction shown in the diagram. The emphasis is on the effect of magnetism on the nail, not the characteristics of the magnet itself.

C) Magnets can either attract or repel each other.

This statement is accurate in a general sense about magnets, but it does not specifically pertain to the interaction depicted in the diagram. The focus here is on the induction of magnetism in the nail rather than the attraction or repulsion of two magnets.

D) Magnetic force can induce magnetism in particular materials.

This option is correct as it directly addresses the phenomenon occurring in the diagram. The steel nail becomes magnetized due to the influence of the magnetic field from the magnet, showcasing how certain materials can be magnetized through exposure to a magnetic force.

Conclusion

The correct answer, option D, accurately reflects the principle of magnetic induction as illustrated in the diagram. The other options, while related to magnetism, do not specifically address the interaction between the magnet and the steel nail in the context provided. This emphasizes the concept that certain materials can exhibit magnetic properties when influenced by an external magnetic field.