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