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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
fuse
B
electric meter
C
both circuit breaker and fuse
D
circuit breaker
2) Which of the following is NOT an insulator?
A
water
B
wood
C
air
D
glass
3) Objects that are in contact with the Earth are
A
insulators of electric charge
B
All of the above
C
grounded
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
potenial charge
B
potential force
C
potential problem
D
potential difference
6) The part of a solar panel that converts light into electrical energy is called a...?
A
thermoscope
B
photocell
C
battery
D
cell
7) _____is used in homes because it is more practical for transferring electrical energy.
A
Alternating current
B
Direct current
C
Photonic current
D
Thermic current
8) Opposition to the flow of electric charge is called?
A
resistance
B
voltage
C
current
D
potential difference
9) A device that uses electrical energy to do work is called a...?
A
series circuit
B
load
C
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 grow dimmer
B
The bulbs would grow brighter
C
The bulbs would no longer glow
D
The brightness would not change
*select an answer for all questions
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