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Investigation of determination of flux density of magnets(plane)
- Words:
- 1230
- Submitted:
- Tue Jul 15 2008
- Mark submitted by Author:
Have a little read: ... Investigation of determination of flux density of magnets Introduction A magnet is a material or object that produces a magnetic field. A low-tech means to detect a magnetic field is to scatter iron filings and observe their pattern, as in the accompanying figure. A 'hard' or 'permanent' magnet is one that stays magnetized, such as a magnet used to hold notes on a refrigerator door. Permanent magnets occur naturally in some rocks, particularly lodestone, but are now more commonly manufactured. A 'soft' or 'impermanent' magnet is one that loses its memory of previous magnetizations. 'soft' magnetic materials are often used in electromagnets to enhance the magnetic field of a wire that carries an electrical current and is wrapped around the magnet; the field of the 'soft' magnet increases with the current. As current flows through a wire, the wire is magnetized and it generates a magnetic field around it, and this magnetic
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