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B
False
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Solution
The correct option is A True
Magnets of different shapes are available
The Various Shapes of Magnets and Their Uses
Bar Magnets. A magnet's power is focused at the poles and lessens at the sides. Horseshoe Magnets. Horseshoe magnets are just bar magnets bent in a U shape,Disc Magnets,Sphere Magnets,Cylinder Magnets,Ring Magnets.Permanent Magnets. Permanent Magnets. There are typically four categories of permanent magnets: neodymium iron boron (NdFeB), samarium cobalt (SmCo), alnico, and ceramic or ferrite magnets. This type of magnet is composed of rare earth magnetic material, and has a high coercive force.