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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?
Question by OpenStax is licensed under CC BY 4.0.
Final Answer

$6750 \textrm{ } \Omega$

Solution Video

OpenStax College Physics Solution, Chapter 20, Problem 19 (Problems & Exercises) (0:21)

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Video Transcript
This is College Physics Answers with Shaun Dychko. The pocket calculator has a 1.35 volt battery and the current flowing through it is 0.2 times ten to the minus three amps. So resistance is voltage divided by current, so 1.35 volts divided by 0.2 times ten to the minus three amps gives us 6750 ohms.