Electromagnets & the Magnetic Effect of Current

B \propto n \times I \times k_{core} = 16

Field strength16.0

Left poleS

Right poleN

Number of turns100

Current (A)2

Increase the number of turns and confirm the field strength increases
Switch to a soft iron core and confirm the strength is far greater than an air core would give
Reverse the current direction and confirm the poles at each end have swapped
Push turns and current to their maximum with an iron core to reach the strongest field this sim allows
With an air core, confirm even maximum turns and current give a far weaker field than a modest iron-core setup