Physics Annual Examinations For Secondary Schools Form 5 - Directorate For Quality And Standards In Education, 2012 Page 4
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2
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9
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1212 V
C
• •
5.
Diagram 1 shows two resistors connected in series.
3 Ω Ω Ω Ω
3 Ω Ω Ω Ω
a.
Name the:
Diagram 1
i.
meter used to read the p.d. across the resistors, ______________
ii.
meter used to read the current flowing through the circuit, ______________
iii.
the electrical component C. ______________
(3)
b.
Calculate the:
i.
total resistance of the circuit.
____________________________________________
(1)
ii.
current which flows through the circuit.
________________________________________________________________________________
________________________________________________________________________________
(2)
iii.
total power of the circuit.
________________________________________________________________________________
________________________________________________________________________________
(2)
c.
Calculate the total resistance in the circuit shown in Diagram 2. Show your working.
12 V
______________________________________________________
• •
______________________________________________________
3 Ω Ω Ω Ω
______________________________________________________
3 Ω Ω Ω Ω
(2)
Diagram 2
6.
Ernest Rutherford (1871-1937) is considered to be the father of nuclear physics.
Particles named by him include the alpha particle, the beta particle and the proton.
a.
Complete the following:
i.
Proton number is the number of protons in the ____________ of an atom.
ii.
Nucleon number is the number of __________ and __________ in the nucleus of atom.
238
235
iii.
U
and
U
are called ____________.
(4)
92
92
b.
Complete the following table.
Number of protons
Number of neutrons
Number of electrons
238
U
92
235
U
92
(6)
Physics – Secondary Schools – Track 3 - Form 5 – 2012
Page 4 of 12
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