When the starter motor on a car is engaged, there is a 290 A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5 m. What minimum diameter can the wires have if the voltage drop along the wires is to be less than 0.55 V?

= 3.36 mm

Explanation:

From Ohm's law,

(Voltage = Current * Resistance)

The geometric definition of resistance is

where is the resistivity of the material,  and are the length and cross-sectional area, respectively.

Since the wire is assumed to have a circular cross-section, its area is given by

where is the diameter.

Resistivity of copper = . With these and other given values,

yeet youwelcome broo