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P7: Quiz 1
P7: Quiz 1
1)
a) What is a magnetic field?
b) Is a magnetic force an example of a contact or non-contact force?
c)
i) Is the north pole of a magnet positively or negatively charged?
ii) Is the south pole of a magnet positively or negatively charged?
d) Do the magnetic field lines go from positive to negative, or from negative to positive?
e) If the field lines for a magnet are closer together, does this mean that the magnetic field is stronger or weaker?
2) Where will a compass point if it is not in the magnetic field of a magnet? Why is this the case?
3) The diagram below shows a bar magnet with the north and south pole labelled.
a) What is a magnetic field?
b) Is a magnetic force an example of a contact or non-contact force?
c)
i) Is the north pole of a magnet positively or negatively charged?
ii) Is the south pole of a magnet positively or negatively charged?
d) Do the magnetic field lines go from positive to negative, or from negative to positive?
e) If the field lines for a magnet are closer together, does this mean that the magnetic field is stronger or weaker?
2) Where will a compass point if it is not in the magnetic field of a magnet? Why is this the case?
3) The diagram below shows a bar magnet with the north and south pole labelled.
a) Draw the magnetic field lines produced by the bar magnet.
b) We can undertake an experiment with a compass to prove that the magnetic field lines produced by the magnet do look like what you have drawn for part a. Explain the steps for this experiment.
c) Another student suggests using iron filing rather than a compass to find the magnetic field lines produced by the magnet. Why would it be better to use a compass rather than iron filings?
4) How do we show a uniform magnetic field?
5)
a) The north pole of a magnet is placed near to the south pole of another magnet. Add magnetic field lines to the diagram below.
b) We can undertake an experiment with a compass to prove that the magnetic field lines produced by the magnet do look like what you have drawn for part a. Explain the steps for this experiment.
c) Another student suggests using iron filing rather than a compass to find the magnetic field lines produced by the magnet. Why would it be better to use a compass rather than iron filings?
4) How do we show a uniform magnetic field?
5)
a) The north pole of a magnet is placed near to the south pole of another magnet. Add magnetic field lines to the diagram below.
b) Are the two magnets attracted to each other or repulsed?
6)
a) The north pole of a magnet is placed near to the north pole of another magnet. Add magnetic field lines to the diagram below.
6)
a) The north pole of a magnet is placed near to the north pole of another magnet. Add magnetic field lines to the diagram below.
b) Are the two magnets attracted to each other or repulsed?
7)
a) The south pole of a magnet is placed near to the south pole of another magnet. Add magnetic field lines to the diagram below.
7)
a) The south pole of a magnet is placed near to the south pole of another magnet. Add magnetic field lines to the diagram below.
b) Are the two magnets attracted to each other or repulsed?