Electricity
Investigation 4: Current Attractions
Klang
is a coil of wire, usually wound
around a core of iron or steel, wh...
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Electromagnets

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Review the main ideas of Investigation 4: Electromagnets

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Electromagnets

  1. 1. Electricity Investigation 4: Current Attractions Klang is a coil of wire, usually wound around a core of iron or steel, which produces a magnetic field when electricity flows through the wire. Electromagnet Rivet The magnetism produced by an electromagnet can be turned on and off. Small Washers A Coil is wire wound repeatedly around a central core. A magnet can be made by winding an insulated wire around an iron core and running current through the wire. A Core is the material around which a coil is wound. A prediction is an educated guess based on knowledge or information. A graph is a way to display the relationship between variables. What can produce a Stronger Electromagnet? Assuming that all the coils are wound in the same direction... 1) More winds produce a stronger electromagnet 2) Tighter winds produce a stronger electromagnet 3) Thicker wire produces a stronger electromagnet 4) Adding a D-cell in a SERIES circuit Note: Adding a D-cell in a parallel circuit DOES NOT make a stronger electromagnet.

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