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WRITE ALL YOU REMEMBER ABOUT ELECTROMAGNETS
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Electromagnets are made from wire with an electric current being wrapped around a magnetic object. To strengthen an electromagnet you can coil the wire around the magnetic object, or to further strengthen- add an iron core instead of a normal magnet. They have the same magnetic fields as bar magnets, except they can be reversed and turned off.
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- GCSE science (End of KS3 revision) Note on WRITE ALL YOU REMEMBER ABOUT ELECTROMAGNETS, created by jesswarner27 on 09/05/2013.
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- jesswarner27 · May 2013
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- Feb 19, 2016
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