E&M > Electromagnetic Induction > Eddy Currents DCS# 5K20.25

EDDY CURRENT TUBE

eddy current tube

APPARATUS
 
1.5 m aluminum tube 202-20-C
magnet and nonmagnet 202-20-C
box of sand to catch magnet 202-20-C


DESCRIPTION The magnet takes longer than the nonmagnet to fall through the tube (about 5.5 seconds as compared to 0.5 s).  The falling magnet induces currents in the tube whose magnetic fields oppose the motion of the magnet. NOTES