A battery charger supplies a current of 20Amp to charge a storage battery which has an open-circuit voltage of 11.2V. If the voltmeter connected across the charger reads 13.6V, what is the internal resistance of the battery at this time?

A battery charger supplies a current of 20Amp to charge a storage battery which has an open-circuit voltage of 11.2V. If the voltmeter connected across the charger reads 13.6V, what is the internal resistance of the battery at this time?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 49P: A copper wire has a resistance of 0.500 at 20.0°C and an iron wire has a resistance of 0.525 at the...

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Question

A battery charger supplies a current of 20Amp to
charge a storage battery which has an open-circuit
voltage of 11.2V. If the voltmeter connected across the
charger reads 13.6V, what is the internal resistance of
the battery at this time?

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