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Electromagnetism + bell

Electromagnetism + bell - Magnetic Field Magnetic...

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Magnetic Field Magnetic Field Magnets have both a north pole  Magnets have both a north pole  and a south pole. and a south pole. The magnetic lines of force flow  The magnetic lines of force flow  from pole to pole as shown in  from pole to pole as shown in  the sketch. the sketch. It is easy to feel the attraction  It is easy to feel the attraction  or repulsion when one plays  or repulsion when one plays  with two magnets.  with two magnets. 
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Electromagnetism Electromagnetism A magnetic field is produced when an electric current  A magnetic field is produced when an electric current  flows through a coil of wire. This is the basis of the  flows through a coil of wire. This is the basis of the  electromagnet.  electromagnet.  We can make an electromagnet stronger by doing  We can make an electromagnet stronger by doing  these things:  these things:  wrapping the coil around an iron core  wrapping the coil around an iron core 
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