A simple electromagnet is constructed by coiling a length of wire around an iron nail. When electric current is passed through the wire,a magnetic field is produced,attracting steel paper clips. Photo 2 of 2 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5149 px × 3420 px |
Model Release : | Non requis |
Restrictions : |
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