Physics Sec Sample Paper I Worksheet - University Of Malta, 2012 Page 11
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1110.(a) Elena works as a ship inspector. She often uses a small device that tests
the structures of metal panels. Her gauge (meter) breaks and out of it
two bar magnets fall.
(i)
Name a metal that is suitable to produce a permanent magnet.
_____________________________________________________________________
(1)
Elena investigates the polarities of the two permanent magnets so she can fix
the gauge. When the two magnets are place on a sheet of paper as shown in
Diagram 8, Elena feels an attraction between the magnets.
sheet of paper
Diagram 8
A
B
Magnet 2
Magnet 1
(ii)
What conclusion can she draw about the polarities of A and B?
_____________________________________________________________________
(1)
(iii)
Elena places a small plotting compass between the two magnets and
draws the field lines on the sheet of paper. The arrow of the compass
always points towards A. What is the polarity of A and B?
A = _____________________ B = ____________________
(2)
(iv)
On Diagram 8 above, sketch the magnetic field lines in the region
between the two magnets clearly showing the direction of the magnetic
field.
(2)
(b)
(i)
Describe an experiment to show that a current carrying conductor in a
magnetic field experiences a force.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
(2)
(ii)
List two factors that affect the size of the force on the conductor.
_____________________________________________________________________
_____________________________________________________________________
(2)
Page 11 of 11
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