

Understanding Electrical Concepts and Circuits
Interactive Video
•
Physics
•
6th - 8th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of free electrons in a conductor like copper?
They create a magnetic field.
They remain stationary.
They flow in one direction when connected to a power source.
They repel protons.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to an electric cell when the chemicals inside are used up?
It starts producing heat.
It becomes a resistor.
It stops producing electricity.
It produces more electricity.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a resistor affect the flow of electric current?
It increases the flow of current.
It decreases the flow of current.
It changes the direction of the current.
It has no effect on the current.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using symbols in electrical circuits?
To make circuits more complex.
To simplify the representation of components.
To increase the resistance of the circuit.
To reduce the voltage in the circuit.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a series circuit, what happens if one component fails?
The current doubles.
The voltage increases.
The entire circuit stops working.
The other components continue to work.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are household circuits typically connected in parallel?
To increase the overall resistance.
To reduce the power consumption.
To allow appliances to operate independently.
To ensure all appliances receive the same current.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a battery composed of?
A single electric bulb.
A resistor and a capacitor.
Multiple cells connected in series.
A single cell.
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