Car Battery Circuit: Current Through Starter & Dead Battery

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SUMMARY

The discussion focuses on calculating the current passing through a starter motor and a dead battery when jumper cables are attached. The good battery supplies a current of 200A to the starter motor, while the dead battery contributes 14.5A. These values were determined using Kirchhoff's Loop Law, which is essential for analyzing electrical circuits. The user expresses confusion on how to proceed with further calculations.

PREREQUISITES
  • Understanding of Ohm's Law
  • Familiarity with Kirchhoff's Laws
  • Basic knowledge of electrical circuits
  • Experience with current measurement in circuits
NEXT STEPS
  • Study advanced applications of Kirchhoff's Loop Law
  • Learn about the effects of series and parallel circuits on current flow
  • Investigate the role of battery capacity in circuit performance
  • Explore practical scenarios involving jumper cables and battery interactions
USEFUL FOR

Students studying electrical engineering, hobbyists working with automotive electrical systems, and anyone interested in understanding battery interactions in circuits.

kdspuhler
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Homework Statement


Two parts:

With the jumper cables attached, how much current passes through the starter motor?

With the jumper cables attached, how much current passes through the dead battery?


Homework Equations


Ohm's Law and Kirchhoff's Laws


The Attempt at a Solution


Well I've already figured out that the good battery can supply the starter motor with a 200A current and the dead battery can provide it with a 14.5A current. I found both of these answers using Kirchhoff's Loop Law. I'm honestly lost from here though.

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