magnetism

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A student is experimenting with a plotting compass. The magnetic north
pole of the compass needle located at the tip of the arrow
The needle will align itself with the magnetic field of the Earth
1 of 7
Explain the difference between a permanent and an induced magnet
A permanent magnet produces its own magnetic field (and it always has
a north and south pole) [1]. An induced magnet only becomes magnetic
when it is placed into a magnetic field [1].
2 of 7
Explain how you could use the below experimental setup to determine
whether a metal bar is a permanent or an induced magnet
If the metal bar is a permanent magnet, it can be attracted/repelled by the bar magnet [1]. If the
metal bar is an induced magnet, it will only ever be attracted to the bar
magnet.
3 of 7
when do we use the right-hand grip rule?
for straight wires
4 of 7
when do we use Flemmings left-hand rule?
to determine the direction of the force.
[up/down jump]
5 of 7
the strength of the MF depends on:
-the size of the current
-the distance from the wire
6 of 7
F=BIl
force[N]=B[magnetic flux density] x I[current] x l[length]
7 of 7

Other cards in this set

Card 2

Front

Explain the difference between a permanent and an induced magnet

Back

A permanent magnet produces its own magnetic field (and it always has
a north and south pole) [1]. An induced magnet only becomes magnetic
when it is placed into a magnetic field [1].

Card 3

Front

Explain how you could use the below experimental setup to determine
whether a metal bar is a permanent or an induced magnet

Back

Preview of the front of card 3

Card 4

Front

when do we use the right-hand grip rule?

Back

Preview of the front of card 4

Card 5

Front

when do we use Flemmings left-hand rule?

Back

Preview of the front of card 5
View more cards

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