A fan has a power rating of 0.08 kW. It is switched on for 8 hours a day.
Assuming that one month is 30 days, how much energy does the fan convert in one month? Give your answer in kWh.
Household electricity Practice
Quiz
•
Physics
•
8th Grade
•
Medium
Ben Goh
Used 62+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A fan has a power rating of 0.08 kW. It is switched on for 8 hours a day.
Assuming that one month is 30 days, how much energy does the fan convert in one month? Give your answer in kWh.
0.64 kWh
2.4 kWh
19.2 kWh
24 kWh
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A computer has a power rating of 150 W.
If it is switched on for 5 hours a day, how much energy does the computer convert in one day?
0.75 kWh
30 kWh
750 kWh
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A fridge has a power rating of 2.0 kW.
If 1 kWh of electrical energy costs $0.30, how much does it cost to use the fridge for 24 hours?
$0.60
$4.80
$14.40
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A fridge has a power rating of 2.0 kW.
If 1 kWh of electrical energy costs $0.30, how much does it cost to use the fridge for 24 hours each day for 30 days?
$60
$432
$4320
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A vacuum cleaner has a power rating of 0.8 kW.
Calculate how much it costs to use a vacuum cleaner for 2 hours every day, for 30 days.
Assume that electricity cost $0.25 per kWh.
$12
$15
$24
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A light bulb has a power rating of 100 W. It is switched on for 12 hours a day.
Assuming that one month is 30 days, how much energy does the light bulb convert in one month? Give your answer in kWh.
1.2 kWh
36 kWh
1200 kWh
3600 kWh
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A water heater has a power rating of 1.2 kW.
If 1 kWh of electrical energy costs $0.30, how much does it cost to use the water heater for 2 hours?
$0.36
$0.72
$0.60
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