Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 17

The data below are taken from a test of a petrol engine for a motor car. power output: 150 kW fuel consumption: 20 litres per hour energy content of fuel: 40 MJ per litre What is the ratio \frac{\text{power output}}{\text{power input}}?

1. A\frac{150 \times 10^3}{40 \times 10^6 \times 20 \times 60 \times 60}
2. B\frac{150 \times 10^3 \times 60 \times 60}{20 \times 40 \times 10^6}
3. C\frac{150 \times 10^3 \times 40 \times 10^6 \times 20}{60 \times 60}
4. D\frac{150 \times 10^3 \times 20}{40 \times 10^3 \times 60 \times 60}

As printed in the paper