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NCERT Solutions for class 12 physics chapter 5 Magnetism and Matter are given in this article with a detailed explanation. Magnetism is a force by virtue of which a metal is attracted to certain materials, which are known as magnets. These days magnets have a lot of applications in areas such as an electric bell, telephone, radio, loudspeaker, motors, fans, screwdrivers, etc.
The chapter has a weightage of 5 to 6 marks in the CBSE Class 12 Physics Examination. The NCERT Solutions for Class 12 Physics Chapter 5 covers concepts of the dipole moment of a magnet, permanent magnets, classification of magnetic materials, etc.
Download PDF: NCERT Solutions for Class 12 Physics Chapter 5
NCERT Solutions for Class 12 Physics Chapter 5
NCERT solutions for class 12 physics chapter 5: Magnetism and Matter are given below.
Class 12 Physics Chapter 5 Magnetism and Matter – Important Concepts
- Magnetic field lines are the imaginary lines along which the North Magnetic move.
| The larger the number of magnetic field lines per unit area, the stronger the magnetic field will be. |
- When a magnet placed in a uniform magnetic field B experiences a dipole moment m, then it experiences a force, torque, and potential energy.
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Magnetic Materials are classified as Diamagnetic, paramagnetic, and ferromagnetic. χ refers to the magnetic sensitivity of the material.
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The magnetic field of a solenoid with a radius, carrying I current at distance r on the axis is given by:
| \(B = {\mu_0 \over 4\pi} {2m \over r^3}\) |
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In the above formula, m refers to the magnetic moment of the solenoid that is given by –
| \(m = n(2l)(\pi a^2)\) |
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