Types Of Magnets
Magnetism of Class 10
Magnets are of two types:
NATURAL MAGNETS:
They are weak and mostly irregular in shape.
ARTIFICIAL MAGNETS:
When natural magnets are rubbed against iron or steel bars, the same property of attraction is communicated to these bars. They can be strong and have any desired shape and size.
Types of artificial magnets
(a) Bar Magnets: They may be cylindrical or rectangular in shape.
(b) Magnetic Needle: It is in the form of an elongated rhombus. The pole regions almost contract to the points at the ends of the needle while the remaining region is a neutral zone. The magnetic needle is either pivoted to a nail or suspended so that it can rotate freely.
(c) Magnetic compass: It is a compact form of magnetic needle, which is pivoted at the center of a small box, made of brass having a glass top.
The north pole of this needle is generally painted red.
Use of Magnetic Compass
- To check the polarity of a magnet.
- To find the direction of magnetic field.
- To find the magnetic north-south direction.
