magnetism - permanent and induced magnets Flashcards
what does a bar magnet have?
two poles (North and South). the magnetic forces are strongest at the poles of a magnet
what happens when we bring 2 magnets close together?
they exert a force on each other
what happens when we bring the same pole if a magnet close together?
two like poles repel, force of repulsion. that repulsion is forcing the magnets apart
tow un line poles _______ each other…
attract.
north and south pole attract each other.
what are the attraction and repulsion between 2 magnetic poles examples of?
non contact forces. that is because magnets don’t have to touch to experience the force
what is a permanent magnet?
produces its own magnetic field. example bar magnet
what happens when we bring 2 permanent magnets close together?
they can attract or repel on each other depending on direction
what is an induced magnet?
an object that becomes a permanent magnet when it is placed in a magnetic field. the magnetic field causes the 2 objects to become magnets.
_______ magnetism always causes a _____ of __________.
induced, force, attraction
what happens to induced magnetic when we take away permanent magnet?
the induced magnets lose most or all of their magnetism quickly
