GCSE Questions: Energy Sources

Q18. An electric car has a motor that is powered by a battery.

A diesel car has an engine that is powered by diesel fuel.

(a) The table compares an electric car and a diesel car.

Give two advantages of the diesel car compared with the electric car in the table.

[2 marks]

(b) The mass of the battery in the electric car is 420 kg.

The total mass of the electric car is 1610 kg.

Calculate the mass of the battery as a percentage of the total mass of the electric car.

[2 marks]

(c) Designers of electric car batteries want to increase the amount of energy that can be stored in a battery. Suggest two reasons why.

[2 marks]

(d) The diagram shows an electric car being recharged.

(i) Write down the equation which links energy transferred, power and time.

[1 mark]

(ii) The charger has a power output of 7000 W.

Calculate the time taken to transfer 420 000 J of energy to the car battery.

[3 marks]

(Total 10 marks)