When a light bulb is connected across the terminals of a battery, the battery delivers 21.1 W of power to the bulb. A voltage of 10.0 V exists between the terminals of the battery, which has an internal resistance of 0.2432. What is the emf of the battery? Number [4.897 Units

When a light bulb is connected across the terminals of a battery, the battery delivers 21.1 W of power to the bulb. A voltage of 10.0 V exists between the terminals of the battery, which has an internal resistance of 0.2432. What is the emf of the battery? Number [4.897 Units

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter18: Direct-Current Circuits

Section: Chapter Questions

Problem 50AP: Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source, as shown in Figure P18.50....

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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.

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When a light bulb is connected across the terminals of a battery, the battery delivers 21.1 W of power to the bulb. A voltage of 10.0 V exists between the terminals of the battery, which has
an internal resistance of 0.2432. What is the emf of the battery?
Units
Number
V
4.897
the tolerance is +/-2%

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