Magnet
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Transcript of Magnet
![Page 1: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/1.jpg)
![Page 2: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/2.jpg)
MAGNETMagnet produces magnetic field
A force pulls on ferromagnetic material
Attracts and Repels other magnets
![Page 3: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/3.jpg)
MAGNETIC FIELDMagnetic influence of electric
current &magnetic material.
Direction & Magnitude
denoted by ‘H’
![Page 4: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/4.jpg)
What affects the strength of magnet?
Material between magnet & metal.
Concrete slab interrupts field.
Skin,paper do not.
![Page 5: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/5.jpg)
MAGNETIC FLUXAmount of magnetic field passing
through a surface
Represented by ‘B’
The SI unit is ‘weber’
![Page 6: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/6.jpg)
ELECTROMAGNETS
Insulated wire around iron
Current magnetizes the coil
![Page 7: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/7.jpg)
EARTH’S MAGNETIC FIELDIron particles around the earth.
Iron acts as coil.
North- South poles.
![Page 8: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/8.jpg)
EARTH’S MAGNETIC FIELD
![Page 9: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/9.jpg)
MAGNETIC COMPASSTo find direction
Two ends
A coloured end points North direction
![Page 10: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/10.jpg)
MAGNETIC COMPASS
![Page 11: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/11.jpg)
AURORABright band of light
Deflected charged ions from sun by the earth magnetic field
Protects Solar Wind
![Page 12: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/12.jpg)
AURORA
![Page 13: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/13.jpg)
AURORA
![Page 14: Magnet](https://reader036.fdocuments.us/reader036/viewer/2022081519/55a3aa361a28ab78658b4660/html5/thumbnails/14.jpg)
APPLICATIONSMagnetic Levitation Train
Computer Disks, Video Tapes
Magnetic bed