magnetism and electrical object moving in it? the formula is:
F= QVB
q is the charge
f is force
v is velocity (relative to the object, it can be the magnet that moves and not the particle)
And B is thr strengh of the magnetic field, SI unit is Tesla wich is a very huge unit. I think that earth magnetic field dont reach 1 Tesla. Anyhow but iron isnt electrical (if it isnt ionized) but it can be magnetic, that means the spin of the atoms is in the same direction so they increase each other.
Nums when it comes to physic I know alot, I´ll gladly help, I can almost (if not) all standard formulas in my head.