Electromagnets 0.0 / 5 ? PhysicsForces and MotionGCSEAQA Created by: CharCreated on: 21-05-13 19:57 What are the ends of a magnet called? Magnetic poles 1 of 13 What are the two poles? North and South 2 of 13 What is the magnetic field? The reigon around the magnet, in which which a piece of iron or steel will be attracted to it 3 of 13 What will iron fillings do when placed near a magnet? They will form a pattern of lines that loop from one pole to the other 4 of 13 What are these lines called? Lines of force/magnetic field lines 5 of 13 Where will a plotting compass placed in the magnetic field always point? Along a field 6 of 13 When a current flows through a wire, what is produced around it? A magnetic field 7 of 13 How is an electromagnet made? Wrapping insulated wire around a piece of iron 8 of 13 What is the piece of iron called? The core 9 of 13 What happens to the iron when the current flows through the wire? It becomes strongly magnetised 10 of 13 So, what happens when the current is switched off? The iron loses its magnetism 11 of 13 What makes the electromagnets very useful? The temporary magnetism 12 of 13 What are electromagnets used in? Scrapyard cranes, circuit breakers, electric bells and relays 13 of 13
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