See how many iron filings you can pick up by changing the different items in the window.

• Click and drag on the iron core to change the number of windings.
• Click and drag the wire to change the gauge (the size) of the wire.
• Change the current type from AC to DC.
• Change the type of wire used to see which type of material conducts electricity better to make the magnetism stronger.
• Change the volts, too!