Distant galaxies, humans and beasts, tiny invisible atoms are all penetrated by magnetic fields from a variety of sources over and over again. Hence, we can say that magnetic phenomenon is universal in nature. In the previous chapter, we studied the relationship between electricity and magnetism. In this chapter, we take a look at magnetism in its own right. One learns the following topics in this chapter:
- Description of a bar magnet and its behaviour in an external magnetic field
- Gauss’s law of magnetism followed up with an account of the earth’s magnetic field
- Classification of materials based on their magnetic properties
- Electromagnets and permanent magnets
Download the CBSE class 12 Physics Revision notes Chapter 5 Magnetism and Matter pdf to efficiently prepare for the class 12 boards. The concise notes provided here comprise of answers with clear-cut explanations and one is sure to score great marks in exams.
Frequently asked Questions on CBSE Class 12 Physics Notes Chapter 5: Magnetism and Matter
What is meant by ‘Magnetism’?
The characteristics of a magnet to attract or pull other magnets/magnetic objects is known as ‘Magnetism’.
What is the benefit of having a magnetic field?
A major benefit of having a magnetic field is its use of navigation. The Earth is a place of habitation because of its magnetic fields.
Can wearing magnets or magnetic objects cause harm?
Although they have been used in various diagnostic devices in the health sector and as therapeutic tools, magnets are potentially harmful to the body and pose increased risk of accident.