induced magnets and magnetism Flashcards
1
Q
permanent magnets produce their own magnetic field lines ____ time
A
all the time
2
Q
if you put a magnetic material into a magnetic field, it is ____ and becomes ____ _____
A
magnetised
induced magnet
3
Q
if an induced magnet
is taken away from the magnetic field then,
A
it becomes demagnetised
4
Q
magnetically soft materials are
A
easily magnetised, but also become demagnetised quickly and easily
temporarily magnetised
5
Q
magnetically hard materials
A
are hard to magnetise and also very hard to demagnetise
permanently magnetised
6
Q
example of magnetically hard material
A
bar magnet
7
Q
example of magnetically soft material
A
iron
