Font size
WorksheetsChapter 6 Electricity and Magnetism
Total questions: 10
Worksheet time: 6mins
Which of the following is/are a non-renewable energy source?
Biomass energy
Geothermal energy
Natural gas
Nuclear energy
Wave energy
Which of the following devices use direct current?
Toaster
Wristwatch
Torchlight
Calculator
Hair dryer
Study the information below:
* A device that can change the voltage of an alternating
current
* Output voltage is lower than the input voltage
Based on the information above, where is the device used?
In microwave oven
The Battery charger of a laptop
Before branch substations in the electricity transmission system
Before National Grid Network in the electricity transmission system
The diagram above shows a power station. In which part of the power station, the induced current is produced?
Turbine
Boiler
Generator
Electric tower
The diagram shows a symbol of a type of transformer. Which of the following statements is true about the transformer?
The input voltage is lower than the output voltage
It is used to change the voltage of the direct current
It can be found in the battery charger of a laptop
The number of turns at the primary coil is more than the secondary coil
The diagram shows information about a type of light bulb.
How much energy is wasted by this light bulb?
3J
17J
24J
425J
An electrical appliance has the following label.
Voltage: 240V
Power: 800W
What is a suitable fuse rating for this appliance?
1A
5A
10A
13A
Electrical appliance P with a power of 600W is used for 10 hours. How much is the cost of the electrical energy used if the cost per unit is 25 cents?
RM1.50
RM1.20
RM2.40
RM3.50
Energy efficiency technology will cause sound and thermal pollution.
TRUE
FALSE
The greenhouse effect can be reduced through the application of energy efficiency.
TRUE
FALSE
