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GCSE Standard Questions: Electricity in the Home

Q18. The electricity supply to a house has a potential difference of 230 V.

The table below shows the current in some appliances in the house.

Appliance
Current/A
Dishwasher
6.50
DVD player
0.10
Lamp
0.40
TV
0.20

 

(a) Calculate the total power of all the appliances in the table

[3 marks]

(b) Each appliance in the table is switched on for 2 hours.

Which appliance will transfer the most energy?

Give a reason for your answer.

[2 marks]

(c) The average energy transferred from the National Grid every second for each person in the UK is 600 J.

Calculate the average energy transferred each year from the National Grid for each person in the UK.

[3 marks]

(Total 8 marks)