Chapter Overview
This chapter explores fundamental magnetic phenomena: bar magnets, field lines, Earth's magnetism, magnetic intensity (𝐻), magnetization (𝑀), permeability, and classification of materials into diamagnetic, paramagnetic, and ferromagnetic types. It also discusses hysteresis, permanent magnets, and electromagnets with practical applications.
Important Keywords
- Magnetic Field: Region around magnets/currents defined by field lines. :contentReference[oaicite:1]{index=1}
- Magnetic Intensity (H): Field strength excluding material response.
- Magnetization (M): Magnetic moment per unit volume.
- Permeability (μ): Measure of material’s ability to support magnetic field.
- Diamagnetic: Weakly repelled by magnetic fields. :contentReference[oaicite:2]{index=2}
- Paramagnetic: Weakly attracted to magnetic fields. :contentReference[oaicite:3]{index=3}
- Ferromagnetic: Strongly attracted, can retain magnetism. :contentReference[oaicite:4]{index=4}
- Hysteresis: Lagging of magnetization behind field, creating loop.
Detailed Notes
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