
Understanding Voltage and Current in Circuits LG3
Authored by Emily Hoysted
Science
8th Grade
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main role of voltage in an electric circuit?
To measure the speed of electrons
To act as the energy source that pushes charges through the circuit
To count the number of electrons
To stop the flow of current
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does electric current represent in a circuit?
The amount of energy stored
The flow of electric charge
The resistance to flow
The brightness of a light bulb
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which unit is used to measure voltage in Australia?
Amperes
Volts
Ohms
Watts
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which unit is used to measure electric current?
Volts
Amperes
Ohms
Joules
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a battery provides a higher voltage, what effect does it have on the circuit (assuming resistance stays the same)?
The current decreases
The current increases
The resistance increases
The circuit stops working
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the symbol for current in equations?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the symbol for voltage in equations?
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