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Grade 10 formative exam solution

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‫اختبار التقويم التكويني األول‬
2024-2023 ‫الفصل الدراسي الثاني‬
‫اسم المقدر‬
Marker
Name
‫كتابة‬
In Words
‫الدرجة‬
Mark
‫رقما‬
In Figures
‫المعارف للتعليم الثانوي بنين‬
10 A – ‫العاشر – متقدم‬
Student No /‫رقم الطالب‬
‫رقم السؤال‬
Student NameQuestion
/ ‫اسم الطالب‬No.
‫األول‬
7
School Name / ‫اسم المدرسة‬
‫الثاني‬
10
Grade & Stream
/ ‫الثالثو المسار‬
‫الصف‬
8
Subject / ‫المادة‬
Physics - ‫الفيزياء‬
25
‫الدرجة المستحقة‬
‫التغذية الراجعة‬
Part 1- concepts
7
Question 1: (4 Point) Match each description to the items below.
the depiction of lightbulbs or heating elements in a circuit diagram
the depiction of lightbulbs or heating elements in a
circuit diagram
potential difference divided by resistance
the instrument that measures current
the type of circuit in which the equivalent resistance
is the sum of the resistances of each resistor
Question 2 : ( 1 Point )
1
ammeter
2
series
3
current
4
resistors
The conservation of charge in a circuit implies that ______.
A)electrons cannot be created or destroyed
B)the total amount of charge is constant
C)electrons can move through the circuit
D)all of the above
Question 3: ( 1 Point )A conventional current is the flow of ______.
A)alternating current
B)electrons
C)electrons or ions
D)positive charge
Question 4: ( 1 Point )
A series circuit has a 120-V generator, but requires a source that provides a potential difference
of only 60 V. To achieve the desired potential difference, a ____ can be used.
A)photoresistor
B)sensor
C)voltage divider
D)semiconductor
Part 2Question 5: ( 1 Point )
10
The potential difference between two points in space is 1000 V, and 2 coulombs of charge is
transferred from the point of lower potential to the point of higher potential. The amount of
work done is ______.
A) 2×10−3 J
B) 500 J
C) 1000 J
D) 2000 J
Question 6: ( 1 Point )
A 9-V battery is connected to a toy car, and the current produced is 2 A. The rate at which energy
is delivered to the toy car is ______.
A)4.5 J
B)18 J
C)4.5 W
D)18 W
Question 7: ( 1 Point )
A 60-W lightbulb runs for 2 hours. The energy transformed is ______.
A)30 J
B)120 J
C)120,000 J
D)432,000 J
Question 8: ( 1 Point )
A lamp is connected to a battery of 50 V, and the current through the circuit is 2 A. The
resistance of the lamp is ______.
A)0.04 Ω
B)25 Ω
Question 9 : ( 1 Point )
C)100 Ω
D)150 Ω
The current through a resistor of 15 Ω is 5.0 A. The potential difference across the resistor is ___.
A)0.33 V
B)3.0 V
C)45 V
D)75 V
Question 10 : ( 1 Point )
A series circuit has a power source of 120 V and a 150-Ω resistor. The power delivered by the
power source is ______.
A)96 W
B)192 W
C)9.6 kW
D)96 kW
Question 11 : ( 1 Point )
The rating of a lightbulb is 100 W and its resistance is 50 Ω. The current through the lightbulb
when it is on is ______.
A)0.5 A
B)1.4 A
C)2 A
D)5000 A
Question 12 : ( 1 Point )
The amount of energy transformed by a 150-W lightbulb in 24 h is ______.
A)3.6 J
B)130,000 J
C)3.6 kWh
D)3×103 kWh
Question 13 : ( 1 Point )
A household’s electric bill is $56 for the month of February and the cost of electricity is $0.12 per
kilowatt-hour. The household used ______ of energy in this month.
A)6.7 kW
B)467 kJ
C)467 kWh
D)67 kJ
Question 14 : ( 1 Point )
A heater that operates at 220 W is connected to a 110-V outlet. The current through the heater is
______.
A)0.5 A
B)2 A
C)2.2 A
D)20 A
Part 38
Question 15 : ( 2 Point )
Ammeter 1 in the diagram reads 0.20 A.
a. What should ammeter 2 indicate?
A
b. What should ammeter 3 indicate?
A
Question 16 : ( 1 Point )
Calculate the equivalent resistance of these series-connected resistors: 680 Ω, 1.1 kΩ, and 11 kΩ.
R=
Question 17 : ( 3 Point )
In the diagram, ammeter A3 reads 0.40 A.
a. Find the potential difference across the battery?
b. What will ammeter 1 read?
c. What will ammeter 2 read?
Question 18 : ( 2 Point )
For the circuit shown in the diagram, the maximum safe power is 5.0×101 W.
a. the maximum safe current ?
b. the maximum safe voltage ?
‫يمكن االستعانة بالمعادالت التالية‬
‫ارجو لكم التوفيق والنجاح ‪.....‬‬
‫مدرس المادة ‪ :‬جمال بني عيسى & هدى الجندي‬
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