Magnetism
This task is about magnetic fields.
Question
a) A steel knitting needle is magnetised by stroking it 50 times in one direction with the north pole of a powerful bar magnet until it becomes magnetised.
What happens when this knitting needle is cut in half?
It becomes two magnets, each has a north and south pole.
It becomes two magnets, one has a south pole but no north pole; and the other has a north pole but no south pole.
It becomes two magnets, one has a strong south pole and a weak north pole; and one has a strong north pole and a weak south pole.
It loses its magnetism once it has been cut into two pieces.
Question
Change answer
b) Draw on the diagram below:
The lines of the magnetic field that would occur around and between the two magnets when they are pushed together.
The direction the field flows in.
b) Draw on the diagram below:
The lines of the magnetic field that would occur around and between the two magnets when they are pushed together.
The direction the field flows in.
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