Kilowatt-hours and the cost of electricity

Question 1

An electric heater rated at 500 W runs for 15 minutes. Electricity costs 20c per kWh. What does it cost, in euro cents?

Answer 

Question 2

Electricity costs 28c per kWh. How much does 3 kWh cost, in euro cents?

Answer 

Question 3

A games console with a power of 3 kW is used for 4 hours. How much energy does it transfer, in kWh?

Answer kWh

Question 4

An electric heater rated at 1000 W runs for 45 minutes. Electricity costs 24p per kWh. What does it cost, in pence?

Answer 

Question 5

Electricity costs 30¢ per kWh. How much does 12 kWh cost, in cents?

Answer 

Question 6

An oven with a power of 1 kW is used for 4 hours. How much energy does it transfer, in kWh?

Answer kWh

Question 7

An electric heater rated at 3000 W runs for 30 minutes. Electricity costs 20p per kWh. What does it cost, in pence?

Answer 

Question 8

Electricity costs 20p per kWh. How much does 8 kWh cost, in pence?

Answer 

Question 9

A washing machine with a power of 1.5 kW is used for 5 hours. How much energy does it transfer, in kWh?

Answer kWh

Question 10

An electric heater rated at 1500 W runs for 120 minutes. Electricity costs 30p per kWh. What does it cost, in pence?

Answer 

Question 11

Electricity costs 15c per kWh. How much does 20 kWh cost, in euro cents?

Answer 

Question 12

A washing machine with a power of 0.1 kW is used for 3 hours. How much energy does it transfer, in kWh?

Answer kWh

Question 13

An electric heater rated at 1000 W runs for 45 minutes. Electricity costs 24p per kWh. What does it cost, in pence?

Answer 

Question 14

Electricity costs 20c per kWh. How much does 5 kWh cost, in euro cents?

Answer 

Question 15

A heater with a power of 2 kW is used for 5 hours. How much energy does it transfer, in kWh?

Answer kWh

Question 16

An electric heater rated at 2500 W runs for 45 minutes. Electricity costs 30p per kWh. What does it cost, in pence?

Answer