100mm (4") Bar Magnet

SKU: 33540

$0.80USD or lower Each

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Quantity1+10+ 100+ 
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The 100mm (4") long ferrite bar magnet can be used for standard physics lab experiments in understanding the nature of magnetic fields; only $0.80.

See our blog on Magnet Experiments for Kids for more information and ideas.


If you need bar shaped magnets with greater holding or repelling force, see: neodymium magnet blocks.

Watch this video of the magnaprobe in action that shows how to identify a magnetic field around a bar magnet.


Repulsion Test

Two 100x20x7mm bar magnets were placed in contact with opposing poles (N:N). They were released and the distance caused by the repulsive force was measured.

Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average
30mm 36mm 35mm 35mm 31mm 33mm

Paperclip Pickup Test

Forty paper clips were placed in a 500ml beaker. A single 100x20x7mm ferrite bar magnet was dipped into the beaker to pick up as many paper clips as possible.

Type Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average
Uncoated Steel 27 21 21 26 25 24

Plastic Coated Steel

14 13 12 11 11 12

Magnet Experiment Video

Reviews (1)
Great magnets! I ordered a bunch for my classroom, they arrived quickly and have held up nicely. Great product and service, I would definitely order from indigo again.
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