Physics (AS & A Level) · May / June 2018 · Paper 12 · Question 16

In 'normal driving conditions', an electric car has a range of 150 km. This uses all of the 200 MJ of energy stored in its batteries. With the batteries initially fully charged, the car is driven 100 km in 'normal driving conditions'. The batteries are then recharged from a household electrical supply delivering a constant current of 13.0 A at a potential difference of 230 V. What is the minimum time required to recharge the batteries?

1. A0.95 hours
2. B12.4 hours
3. C18.6 hours
4. D27.9 hours

As printed in the paper