I n s i fig 1123 magnetic flux pattern of a conductor

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Unformatted text preview: Magnets made of rare minerals: samarium-cobalt or neodymium-iron-boron. If a proportion of magnetism remains after the effects of a strong magnetic field, this is called remanence Br. A reverse magnetic field with the coercive field strength -Hk is required to cancel this magnetisation completely. 1 B Br -Hk H 2 Magnetic field strength (H) Soft magnet (1) Magnetic induction (B) Hard magnet (2) Fig. 11.2.2: Magnetisation curve 168 © Festo Didactic GmbH & Co. KG • FP 1110 11. Physical fundamentals 11.2.2 Electromagnetism The areas surrounding current-carrying conductors always have a magnetic field. The magnetic field lines around a straight conductor are always in concentric circles. The direction of field lines surrounding a current-carrying conductor is determined by the corkscrew rule. If a corkscrew is screwed using the right hand in the direction of the flowing current, then this direction of rotation indicates the direction of the field lines. I N S I Fig. 11.2.3: Magnetic flux pattern of a conductor and a coil Reed switch 11...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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