To calculate the miles that can be driven:
\[ M = E \cdot \text{Eff} \]
Where:
Efficiency in electric vehicles refers to how effectively the vehicle converts electrical energy from the battery into movement, measured in miles per kWh. Higher efficiency means more distance can be covered per unit of energy, which is crucial for maximizing the range of the vehicle.
Let's assume the following values:
Using the formula:
\[ M = 50 \cdot 4 = 200 \]
The miles that can be driven are 200 miles.