Specific steps:
1 First of all, the battery must be attracted by a magnet.
2. The diameter of the magnet should be the same as that of the battery, and it should be coated with conductive metal.
3. Absorb on the negative electrode of the battery to ensure no short circuit.
4, copper wire folded into the shape of the figure, can also be folded into more interesting lines.
5. It should be noted that the two sides under the copper wire can't touch the magnet at the same time, and there should be a gap.
6. Adjust the height so that the current can pass through the copper wire on one side and generate a loop at a certain moment.
7. Put the copper wire on the battery as shown in the figure below.
8. After completion, the small motor starts to rotate.