Electrical energy II - JSS3 Basic science Past Questions and Answers - page 1
What is the purpose of a fuse in an electrical circuit?
To increase the flow of electricity
To control the flow of water
To break the circuit if there's too much current flowing
To generate heat
How do fuses and circuits work together?
Fuses supply electricity to circuits
Circuits protect fuses from overheating
Fuses monitor the flow of electricity in circuits
Circuits control the temperature of fuses
What does an electric meter measure?
Water consumption
Gas usage
Electricity usage
Air pressure
Where is an electric meter usually located?
Inside the refrigerator
Outside the home
In the basement
Under the sink
What is the function of an electric meter?
To measure internet speed
To track the number of phone calls made
To monitor electricity consumption
To regulate room temperature
How does a fuse protect an electrical circuit?
By increasing the voltage
By decreasing the resistance
By breaking the circuit if there is too much current
By controlling the frequency of electricity
Which component measures electricity usage in a home?
Circuit breaker
Light switch
Electric meter
Power outlet
What happens if a fuse blows?
The circuit becomes stronger
The circuit breaks
The electricity flow increases
The circuit overheats
Where is a fuse typically placed within an electrical circuit?
At the power station
At the end of the circuit
Randomly along the circuit
At strategic points within the circuit
How does an electric meter transmit usage data?
Via radio signals
Through internet connection
Using telephone lines
By physical mail