Asked by Tom
                can someone explain how a "solenoid" wire works?
            
            
        Answers
                    Answered by
            drwls
            
    A solenoid is a tighty wound helical wire, with many turns. It produces a strong magnetic field down the middle when a current flows, becasue each winding produces a field in the same drection.
    
                    Answered by
            drwls
            
    There is a picture of one at http://web.ncf.ca/ch865/graphics/Solenoid.jpeg
    
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