Physics · Explorer

1/4
Electromagnet strengthRunning
Field coil. Coil turns at 810 turns. Field produced 0.65 T, Field required 0.32 T. Currently field produced is over by 0.328 T.TUNINGFIELD PRODUCED810 TURNS13 TURNS SHOWN
t = 0.0s

Field produced

0.65T

Field required

0.32T

810 turns

Field coil. Coil turns at 810 turns. Field produced 0.65 T, Field required 0.32 T. Currently field produced is over by 0.328 T.

What has to balanceB∝NIB \propto NI

What is happening

You are called to a scrapyard lifting magnet that keeps dropping its load.

The load keeps dropping. Holding it needs 0.32 T, each turn of the coil contributes 0.0008 T at the working current, and the winding count is wrong.