Chapter 2.9 Electromagnetism

Lessons In Electric Circuits Volume VI – Experiments Book
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Lessons In Electric Circuits Volume VI – Experiments Book

  • 2.9. ELECTROMAGNETISM552.9ElectromagnetismPARTS AND MATERIALS• 6-volt battery• Magnetic compass• Small permanent magnet• Spool of 28-gauge magnet wire• Large bolt, nail, or steel rod• Electrical tapeMagnet wireis a term for thin-gauge copper wire with enamel insulation instead of rubberor plastic insulation. Its small size and very thin insulation allow for many ”turns” to be woundin a compact coil. You will need enough magnet wire to wrap hundreds of turns around thebolt, nail, or other rod-shaped steel form.Be sure to select a bolt, nail, or rod that is magnetic. Stainless steel, for example, is non-magnetic and will not function for the purpose of an electromagnet coil! The ideal material forthis experiment is soft iron, but any commonly available steel will suffice.CROSS-REFERENCESLessons In Electric Circuits, Volume 1, chapter 14: ”Magnetism and Electromagnetism”LEARNING OBJECTIVES• Application of the left-hand rule• Electromagnet constructionSCHEMATIC DIAGRAMILLUSTRATION