
Power Bill Calculations
Authored by Lisa Thompson
Science
9th Grade
NGSS covered

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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How much will it cost to run a 60 W lamp for 10 hours?
$0.05
$0.18
$3.00
$18.00
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An electric rice cooker rated 800W, 230V is switched on for 30 minutes. Calculate the cost of energy that is used by the rice cooker if the cost per kWh is 30sen.
RM12
RM0.12
RM1.20
RM120
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The kilowatt-hour is the unit of
electrical charge
electrical energy
electrical power
voltage
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An electric rice cooker rated 800W, 230V is switched on for 30 minutes. How much electrical energy is used?
400kWh
3.48kWh
0.4kWh
104kWh
Tags
NGSS.HS-PS3-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is calculated by the power of the appliance x by how much time it was used?
The total amount of energy
The total amount of power
The total watts
Tags
NGSS.HS-PS3-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If a light bulb consumes 100 W and is used for 10 hours, how many kilowatt-hours of energy does it consume?
10 kWh
1 kWh
0.1 kWh
1000 kWh
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If an oven uses 2000 W (2 kW) and is operated for 3 hours, how many kilowatt-hours are used?
6 kWh
600 kWh
60 kWh
0.6 kWh
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