Physics Annual Examinations For Secondary Schools Form 5 - Directorate For Quality And Standards In Education, 2013 Page 11
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12Malcolm notes that when the voltage across the filament lamp is set to a high voltage, the
d.
lamp turns off.
i.
What happened to the filament of the lamp when this high voltage is applied?
___________________________________________________________________________
(2)
ii.
State what happens to the size of the current flow through the filament lamp when a
high voltage is applied across it.
___________________________________________________________________________
(2)
12.
This question is about energy.
Julia and Mario set up an experiment to find the specific heat capacity of orange juice.
a.
They use the following set up to carry out their investigation:
i.
Label diagram of the experimental setup,
(4)
ii.
What are the three measurements Julia and Mario require in order to determine the
specific heat capacity of orange juice?
________________________________________________________________________________
________________________________________________________________________________
(3)
iii.
Which of the above apparatus will they use to ensure that the heat supplied by the
immersion heater is evenly distributed throughout all the orange juice?
________________________________________________________________________________
(1)
iv.
Write one precaution that they need to take during this investigation.
________________________________________________________________________________
________________________________________________________________________________
(2)
Physics – Secondary Schools – Track 2 - Form 5 – 2013
Page 11 of 12
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