A battery with an emf of 13.2 V has a terminal voltage of 12.8 V when the current is 3.16 A. HINT (a) Calculate the battery's internal resistance r (in ohms). (b) Find the load resistance R (in ohms).

A battery with an emf of 13.2 V has a terminal voltage of 12.8 V when the current is 3.16 A. HINT (a) Calculate the battery's internal resistance r (in ohms). (b) Find the load resistance R (in ohms).

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 25PE: (a) What is the internal resistance of a voltage source if its terminal voltage drops by 2.00 V when...

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Concept explainers

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.

Question

A battery with an emf of 13.2 V has a terminal voltage of 12.8 V when the current is 3.16 A.

HINT

(a)

Calculate the battery's internal resistance r (in ohms).

(b)

Find the load resistance R (in ohms).

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