P5.1 - Electricity & Magnetism Flashcards
Magnetism describes
the ability of magnets to attract (pull towards) and repel (push away) other magnets without touching them.
Magnets have a
north and south pole
Opposite poles on magnets
attracted to each other
Same poles of magnets (north and north or south and south)
repel to each other
The forces between magnets are caused by
invisible magnetic fields
When the magnetic field of two magnets overlaps it causes
the magnets to push or pull
What are the only pure metals that can be turned in a magnetic (magnetic materials)
iron, cobalt and nickel
Magnetically hard materials such as steel are
magnetic once they have magnetized
When we refer to magnets we mean
permanent magnets that are made of magnetically hard materials
magnetically soft materials like iron are
materials that do not stay magnetized
magnetic materials like iron won’t
repel or attract other iron
magnetic materials are attracted to
magnets
What are the properties of magnetic materials
Magnetic materials can be attracted to by magnet but not repelled.
only 2 magnets can repel each other
non magnetic materials will never attract to magnets
permanent magnets are always magnetic
Permanent magnets are responsible for
inducing temporary poles in magnetic materials causing them to attract
Induced magnets are magnetic materials that
become temporary magnets when in a magnetic field
