Northwestern Physics Demos                                 Go back to Magnetism
DCS# 5G20.70NWU# Ma-13 Location:  8 F 2
title: Electromagnetic Nail Lift
aka: DC magnet

    A coil of wire is connected to a 6 V power supply.  An iron core can be inserted.  When energized, the coil & core will pick the complete load of nails from the beaker.   Without the core, few nails are able to be picked up.

    How does the core increase the lifting power?
     Why do the nails stick together?
pix of set upset up