what is the difference between solenoid and electromagnet?
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An electromagnet is an electrically induced magnet.
As the name implies, it is a core of magnetic material (such as iron) surrounded by a coil of wire through which an electric current is passed to magnetise the core.
A solenoid is a cylindrical coil of wire acting as a magnet when carrying an electric current. A solenoid is the same as an electromagnet but without a core of material that can be magnetised i.e. iron (which is magnetically soft).
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a solenoid is a long coil containing a large number of close turns of insulated copper wire.
an electromagnet is a magnet consisting of long insulated copper wire wrapped around a soft iron core when electricity pass through the coil it behave like a magnet.
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