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Electricity 2
Test Description: 8th grade Science.
Instructions: Answer all questions to get your test result.
1) A device used to protect buildings from electrical fires is a(n)
A
circuit breaker
B
both circuit breaker and fuse
C
fuse
D
electric meter
2) Which of the following is NOT an insulator?
A
wood
B
air
C
glass
D
water
3) Objects that are in contact with the Earth are
A
insulators of electric charge
B
grounded
C
All of the above
D
unable to conduct electric charge
4) A device that is made of several cells and produces an electric current by converting chemical energy into electrical energy is called?
A
an electroscope
B
a thermocouple
C
a thermostat
D
a battery
5) A difference in charge between two electrodes in a cell causes a_____between the electrodes.
A
potential difference
B
potential force
C
potential problem
D
potenial charge
6) The part of a solar panel that converts light into electrical energy is called a...?
A
battery
B
cell
C
photocell
D
thermoscope
7) _____is used in homes because it is more practical for transferring electrical energy.
A
Direct current
B
Photonic current
C
Thermic current
D
Alternating current
8) Opposition to the flow of electric charge is called?
A
current
B
potential difference
C
resistance
D
voltage
9) A device that uses electrical energy to do work is called a...?
A
load
B
circuit
C
series circuit
D
parallel circuit
10) There are 4 light bulbs in a parallel circuit, you add 5 more what will happen to the brightness?
A
The bulbs would no longer glow
B
The brightness would not change
C
The bulbs would grow brighter
D
The bulbs would grow dimmer
*select an answer for all questions
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