The terminal voltage of a battery is 13.5 v when 5 A current enters its positive terminal, but when a 5 A current leaves its positive terminal, the terminal voltage becomes 11.5 v. Determine the EMF and internal resistance of this battery. (ɛ = ?, r =?)

The terminal voltage of a battery is 13.5 v when 5 A current enters its positive terminal, but when a 5 A current leaves its positive terminal, the terminal voltage becomes 11.5 v. Determine the EMF and internal resistance of this battery. (ɛ = ?, r =?)

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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The terminal voltage of a battery is 13.5 v when 5 A current enters its positive terminal, but when a 5 A
current leaves its positive terminal, the terminal voltage becomes 11.5 v. Determine the EMF and
internal resistance of this battery. (8 = ?, r =?)

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