
REVIEW_Electricity
Presentation
•
Physics
•
7th Grade
•
Practice Problem
•
Medium
Irvani Prasanti
Used 15+ times
FREE Resource
11 Slides • 21 Questions
1
By Irvani Prasanti
2
Multiple Choice
What is electricity ?
a power source
an energy
a device
electrons
3
Multiple Choice
What is electricity ?
flowing of charge in circuit
flowing of energy in circuit
flowing of voltage in circuit
flowing of neutron in circuit
4
Multiple Choice
What is current ?
the amount of protons flow per second
the amount of electrons flow per second
the amount of neutrons flow per second
the amount of energy flow per second
5
6
7
8
Buzzer - turns electricity into sound
9
Multiple Choice
Circuit B works, but circuit A does not work. It is beacuse _____ .
Circuit A does not have switch
Circuit B's cells are connected properly
Circuit B has more power than A
Circuit A's bulb is connected in wrong way
10
Multiple Choice
What would happen when the switch is opened ?
nothing, the light bulbs would still work because there is a complete path
the light bulbs would not work because the path was broken
the battery would loose energy
the wires would be cooled f air
11
Multiple Choice
What is the function of this device ?
turn the chemical energy into electrical
turn electrical into chemical energy
turn electrical into sound
turn electrical into light
12
Multiple Choice
What is the function of this device ?
turn chemical energy into electrical
turn electrical into chemical energy
turn electrical into sound
turn electrical into light
13
Multiple Choice
What is the function of this device ?
turn chemical energy into electrical
turn electrical into chemical energy
turn electrical into sound
turn electrical into light
14
Multiple Choice
This is a switch. it is used to turn on/off the electricity in circuit.
What is the condition of this switch ?
opened switch
closed switch
15
Multiple Choice
What does an ammeter measure ?
resistance
voltage
current
energy
16
Multiple Choice
To measure current in circuit, ammeter should be connected in _____ .
series
parallel
17
Multiple Choice
The diagram shows a circuit including a lamp, an electric bell and three switches S1, S2 and S3. The lamp and bell are not faulty.
The bell is ringing but the lamp is not lit. Which switches are closed?
S1 only
S1 and S3
S1 and S2
S
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20
Multiple Choice
All the things are the example of _____ .
conductor
insulator
21
Multiple Choice
Which one below is NOT an insulator ?
wooden block
woolen cloth
metal spoon
rubber band
22
Multiple Choice
Read the scale.
0.44 A
0.48 A
0.60 A
0.80 A
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Multiple Choice
Read the scale.
62 A
64 A
68 A
70 A
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Multiple Choice
Read the scale.
2.2 A
2.4 A
3.0 A
4.0 A
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ADDING/REMOVING cells into circuit will affect to voltage and current flow in that circuit.
Adding more cells will produce large voltage, then the current flows in circuit increases.
27
ADDING/REMOVING lamps in circuit will affect to brightness of lamp and current flow in that circuit.
Adding more lamps with the constant battery in circuit will cause the decrease current flows in circuit, the lamp will be dimmer.
28
Multiple Choice
In a series circuit, adding more bulbs will make the light becomes
dimmer (dull)
brighter
29
Multiple Choice
Adding more cell (batteries) in a line to a circuit, the bulbs will
get brighter
will become less bright
will blink
will explode
30
Multiple Choice
The picture shows an electrical circuit. This circuit is a series circuit because:
It has 3 light bulbs.
The same current flows through all three light bulbs.
It uses a single battery.
The electrical current has more than one path to flow through
31
Multiple Choice
32
DO you HAVE any QUESTIONS ?
By Irvani Prasanti
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