Kilowatts

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

Tags

NGSS.HS-PS3-1

A refrigerator uses 250 W of power and runs for 24 hours a day. How much energy does it consume in one day?

• 6 kWh

• 60 kWh

• 600 kWh

• 0.6 kWh

Calculate the energy consumption in kilowatt-hours for a device that uses 1500 W for 2 hours.

• 0.3 kWh

• 3 kWh

• 30 kWh

• 300 kWh

Tags

NGSS.HS-PS3-1

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

A washing machine uses 500 W of power. If it runs for 4 hours, how many kilowatt-hours of energy does it consume?

• 0.5 kWh

• 2 kWh

• 20 kWh

• 200 kWh

How many kilowatt-hours are consumed if a 750-W air conditioner runs for 8 hours?

• 0.75 kWh

• 7.5 kWh

• 6 kWh

• 60 kWh

Tags

NGSS.HS-PS3-1

A TV that consumes 250 W is used for 5 hours. How many kilowatt-hours of energy is used?

• 1.25 kWh

• 12.5 kWh

• 125 kWh

• 0.125 kWh

If a computer uses 300 W of power and operates for 10 hours, how many kilowatt-hours of energy does it consume?

• 3 kWh

• 30 kWh

• 300 kWh

• 0.3 kWh

Calculate the energy used in kilowatt-hours when a 1200 W microwave is used for 0.5 hours.

• 0.6 kWh

• 6 kWh

• 60 kWh

• 600 kWh

A hair dryer uses 1500 W of power. If it is used for 0.2 hours, how many kilowatt-hours of energy does it consume?

• 0.3 kWh

• 3 kWh

• 30 kWh

• 300 kWh

Tags

NGSS.MS-PS3-3