When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, the current through the battery is 59.4 A and the potential difference across the battery terminals is 8.64 V. When only the car's lights are used, the current through the battery is 2.08 A and the terminal potential difference is 12.6 V. Find the battery's emf. Find the internal resistance.

When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, the current through the battery is 59.4 A and the potential difference across the battery terminals is 8.64 V. When only the car's lights are used, the current through the battery is 2.08 A and the terminal potential difference is 12.6 V. Find the battery's emf. Find the internal resistance.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter21: Circuits And Dc Instruments

Section: Chapter Questions

Problem 20PE: A car battery with a 12-V emf and an internal resistance of 0.050 is being charged with a current...

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