Question

Suppose you have a car with a battery that applies 10.5 V to the starter. What is the effective resistance of a car’s starter when 170 A flows through it in Ω?

R = ?

Answer 1

The effective resistance of the car's starter motor, when 170 A flows through it, and a battery applies 10.5 V, is calculated using Ohm's Law (R=V/I) and is 0.06176 Ω (ohms).

Step-by-step explanation:

To determine the effective resistance (R) of a car's starter motor, we can use Ohm's Law, which states that the voltage (V) across an electrical component is equal to the current (I) flowing through it times its resistance (R), summarized by the formula V = IR. In this case, the car battery applies a voltage of 10.5 V, and a current of 170 A flows through the starter motor. To find the resistance, we rearrange Ohm's Law formula to solve for R: R = V/I. So the effective resistance R = 10.5 V / 170 A = 0.06176 Ω (ohms), which is the answer to the student's question.