Can an ordinary nail be a magnet?

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Presentation transcript:

Can an ordinary nail be a magnet?

Wire wrapped around nail Paperclips attracted to the nail Nail How attractive!

A temporary magnet produced by an electric current Electromagnet A temporary magnet produced by an electric current Magnetic Field Current running around magnet (Wire not in this drawing!) No Current Strength of Electromagnet depends upon: 1. The size of the iron core Larger core = Stronger electromagnet 2. The number of turns of wire around the core More turns = Stronger electromagnet

Common Electromagnets You Used Every Day

Which is stronger??? A B

Which is stronger??? A B