Magnetism 19 Flashcards
a
1
Q
property of magnets?
A
Like poles repel, unlike poles attract
2
Q
what magnetic materials can be attracted
A
iron steel cobalt and nickel
3
Q
induced magnetism
A
where a unmagnetized material will be induced if a permanent magnet is near it
4
Q
property of iron?
A
soft magnetic material - gain and lose magnetism easily
( is a electromagnet
5
Q
property of steel
A
permanent magnet and hard magnetic material - hard to magnetise and demagnetise
(perm) magnet
6
Q
electromagnet
A
made of coil wire
whenever current flow, become magnet
telephone eletric bell an reys
7
Q
permanent agnet
A
hard metal like steel
does not require current
magnetic doorstep card, compass
8
Q
What pole is end-point of magnet when being stroked
A
Unlike point
9
Q
A
