Question

What is the effective resistance of a car’s starter motor when 150 A flows through it as the car battery applies 11.0 V to the motor?

a) 0.073 Ω
b) 7.33 Ω
c) 73.3 Ω
d) 0.733 Ω

Answer 1

The effective resistance of the car's starter motor is 0.073 Ω.

Step-by-step explanation:

The effective resistance of a car's starter motor can be calculated using Ohm's Law, which states that resistance is equal to voltage divided by current. The effective resistance of the car's starter motor is 0.073 Ω.

In this case, the voltage applied to the motor is 11.0 V and the current flowing through it is 150 A. Therefore, the effective resistance can be calculated as:

Resistance = Voltage / Current

Resistance = 11.0 V / 150 A

Resistance = 0.073 Ω

So, the answer is option a) 0.073 Ω.