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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
electric meter
B
both circuit breaker and fuse
C
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
grounded
B
insulators of electric charge
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
a thermostat
B
a thermocouple
C
an electroscope
D
a battery
5) A difference in charge between two electrodes in a cell causes a_____between the electrodes.
A
potential problem
B
potenial charge
C
potential difference
D
potential force
6) The part of a solar panel that converts light into electrical energy is called a...?
A
battery
B
photocell
C
thermoscope
D
cell
7) _____is used in homes because it is more practical for transferring electrical energy.
A
Photonic current
B
Thermic current
C
Alternating current
D
Direct current
8) Opposition to the flow of electric charge is called?
A
potential difference
B
current
C
voltage
D
resistance
9) A device that uses electrical energy to do work is called a...?
A
circuit
B
series circuit
C
load
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 bulbs would grow brighter
C
The brightness would not change
D
The bulbs would grow dimmer
*select an answer for all questions
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