- 1. Magnetism is a fundamental force of nature that manifests through the movement of charged particles. Objects that exhibit magnetic properties are able to attract or repel other objects. This phenomenon is due to the alignment of the microscopic magnetic domains within the material. Magnets have two poles - North and South - and opposite poles attract while like poles repel. Magnetism plays a crucial role in many technologies such as electric motors, generators, and magnetic storage devices. Understanding the principles of magnetism is essential in various fields including physics, engineering, and materials science.
Which materials are typically attracted to magnets?
A) Paper materials
B) Non-metallic materials
C) Ferromagnetic materials
D) Plastic materials
- 2. What is the SI unit of magnetic field strength?
A) Tesla
B) Volt
C) Joule
D) Newton
- 3. What is the region around a magnet where the magnetic force is exerted known as?
A) Force zone
B) Magnetic field
C) Gravity belt
D) Electric field
- 4. What is the north-seeking pole of a magnet commonly referred to as?
A) East pole
B) South pole
C) North pole
D) West pole
- 5. What is the process of using electricity to make a magnet called?
A) Photosynthesis
B) Hydrodynamics
C) Electromagnetism
D) Thermodynamics
- 6. What is the name of a material that retains its magnetization after being exposed to a magnetic field?
A) Magnetized metal
B) Temporary magnet
C) Permanent magnet
D) Magnetic sponge
- 7. A material is repelled by a magnet. What type of poles do the magnet and the material have?
A) South poles
B) Like poles
C) Unlike poles
D) North poles
- 8. Which type of magnets can be turned on and off with an electrical current?
A) Neodymium magnets
B) Electromagnets
C) Permanent magnets
D) Ceramic magnets
- 9. At what temperature does the Curie point occur in a ferromagnetic material?
A) At room temperature
B) Above the Curie temperature
C) At absolute zero
D) Below the Curie temperature
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