The two ends of magnets are called poles with strongest magnetic forces — north and south.
Magnets can be found in MRI scanners, and compasses.
Attraction and Repulson between two magnetic poles are e.g. of Non-contact force.
Magnetic Materials are: Iron, Cobalt, Nickel, Steel (Alloy.)
Magnetic Materials will always be attracted to the magnet.
There are two types of magnets: Permanent Magnets, and Induced Magnets.
Made out of permanent magnetic materials. e.g. Steel.
It will produce its own magnetic field; will not lose its magnetism.
Material with soft iron core that becomes magnet temporarily when placed in a magnetic field.
Magnetised: Induced magnetism causes a force of attraction between permanent magnet.
— A region in which a magnetic pole experiences a force.
Magnetic field is strongest at the poles; the magnetic field lines are closer together at the ends of the magnets.
Magnetic field becomes weaker as distance from the magnet increases; the magnetic field lines get further apart.
The direction of field line shows the direction the magnetic force would act. (Arrows)
Field lines always go from a north pole to a south pole. (N → S)
Measured in Coulomb (C) Unit.
Inside an atom, there are
When two charges are close together, they exert a force on each other.
→ If Charges are the opposite, they will attract. (e.g., Positive & Negative) → If Charges are the same, they will repel. (e.g., Positive & Positive)