Give two advantages of the diesel car compared with the electric car in Table 2 - AQA - GCSE Physics - Question 6 - 2019 - Paper 1

To calculate the percentage, use the formula:

$\text{Percentage of total mass} = \left( \frac{\text{mass of the battery}}{\text{total mass of the car}} \right) \times 100$

Substituting in the values:

$\text{Percentage of total mass} = \left( \frac{420 \text{ kg}}{1610 \text{ kg}} \right) \times 100 = 26\%$

1. To increase the range of electric cars, improving their distance capability between charges.

2. To decrease the total mass of the electric car, enhancing efficiency.

The equation is:

$E = P \times t$

where:

• E is the energy transferred in Joules,
• P is the power in Watts,
• t is the time in seconds.

To find the time, rearrange the equation:

$t = \frac{E}{P}$

Substituting the values:

$t = \frac{420000 \text{ J}}{7000 \text{ W}} = 60 \text{ s}$