Back to P7 Home
P7: Quiz 2
P7: Quiz 2
1)
a) Give a definition of a permeant magnet.
b) Give a definition of an induced magnet.
2)
a) We place a magnetic material next to a permeant magnet. The poles of the permeant magnet are labelled on the diagram below. The ends of the magnetic material are labelled as A and B.
a) Give a definition of a permeant magnet.
b) Give a definition of an induced magnet.
2)
a) We place a magnetic material next to a permeant magnet. The poles of the permeant magnet are labelled on the diagram below. The ends of the magnetic material are labelled as A and B.
What are the poles for ends A and B for the magnetic material?
b) We now flip the magnetic, so that the north pole is now on the left and the south pole is now on the right.
b) We now flip the magnetic, so that the north pole is now on the left and the south pole is now on the right.
What are the poles for ends A and B for the magnetic material?
c) Are magnetic materials always attracted to permeant magnets?
3)
a) When a magnetic material is placed in the magnetic field of a permeant magnet, it becomes magnetised and becomes an induced magnet. What will happen to the magnetism of the magnetic material when it is taken away from the permeant magnet?
b)
i) What does magnetically soft mean? Give an example of a magnetically soft material.
ii) What does magnetically hard mean? Give an example of a magnetically hard material.
4) I have 3 blocks. One of these blocks is a permeant magnet, the other is a magnetic material that is not magnetised and the final one is a non-magnetic material.
c) Are magnetic materials always attracted to permeant magnets?
3)
a) When a magnetic material is placed in the magnetic field of a permeant magnet, it becomes magnetised and becomes an induced magnet. What will happen to the magnetism of the magnetic material when it is taken away from the permeant magnet?
b)
i) What does magnetically soft mean? Give an example of a magnetically soft material.
ii) What does magnetically hard mean? Give an example of a magnetically hard material.
4) I have 3 blocks. One of these blocks is a permeant magnet, the other is a magnetic material that is not magnetised and the final one is a non-magnetic material.
How can determine which block is which if I have a permeant magnet?