is it the current or the voltage
2007-12-13 13:25:38 · 4 answers · asked by macgyver 1 in Science & Mathematics ➔ Engineering
what will make it stronger
2007-12-13 13:40:01 · update #1
Permeability times current times number of windings equals flux density. Flux density is the number of lines of magnetic flux per cross-sectional area of the flux circuit, and is the strength you're talking about. Iron has very high permeability, tens of thousands times more than air, but you have to remember that the tiniest airgap in the flux circuit will have a devastating effect on number of flux lines. This is why electromagnets for lifting things will be a U-shape with the windings all around the U, and the object to be picked up will close the U, completing the flux circuit and eliminating the gap.
2007-12-13 23:53:17 · answer #1 · answered by Gary H 6 · 0⤊ 0⤋
The current flowing throught the coil (the number of turns of windings the coil, and its length just to name a few)
2007-12-13 15:57:25 · answer #2 · answered by fun_easyintelligent 2 · 0⤊ 0⤋
More current and more windings.
2007-12-13 13:58:13 · answer #3 · answered by Thomas C 6 · 0⤊ 0⤋
it is its permeability
2007-12-13 21:47:48 · answer #4 · answered by spk25in 1 · 0⤊ 0⤋