Part FAn AA battery has an emf of 1.50 V. After being used for quite a while, one AA battery has a potential difference across its terminals of 1,30 V when it is connected to a light bulb with resistance 20.0 n.Find the current in thiscircuitExpress your answer with the appropriate units.undo redo Tese keyboard shortcuts HelpValueUnitsSubmitRequeet AnewerPart GFind the internal resistance of the battery.Express your answer with the appropriate units.Templetes Symbols undo redo Teset keyboard shortcuts helpValueUnitsSubmitRequeet Anewer

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An AA battery has an emf of 1.50 V. After being used for quite a while, one AA battery has a potential difference across its terminals of 1.30 V when it is connected to a light bulb with resistance 20.0 n. Find the current in this circuit. Express your answer with the appropriate units. undo redo tes keyboard shortcuts Help Value Units Submit Requeet Answer Part G Find the internal resistance of the battery. Express your answer with the appropriate units. Templetes Symbols undo redo keyboard shortcuts Help Value Units Submit Requeet Answer

An AA battery has an emf of 1.50 V. After being used for quite a while, one AA battery has a potential difference across its terminals of 1.30 V when it is connected to a light bulb with resistance 20.0 n. Find the current in this circuit. Express your answer with the appropriate units. undo redo tes keyboard shortcuts Help Value Units Submit Requeet Answer Part G Find the internal resistance of the battery. Express your answer with the appropriate units. Templetes Symbols undo redo keyboard shortcuts Help Value Units Submit Requeet Answer

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 38P: A portable coffee heater supplies a potential difference of 12.0 V across a Nichrome heating clement...

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A portable coffee heater supplies a potential difference of 12.0 V across a Nichrome heating clement with a resistance of 2.00 . (a) Calculate the power consumed by the heater. (b) How many minutes would it take to heat 1.00 kg of coffee from 20.0C to 50.0C with this heater? Coffee has a specific heat of 4 184J/(kg C). Neglect any energy losses to the environment.
The label on a battery-powered radio recommends the use of a rechargeable nickel-cadmium cell (nicads), although it has a 1.25-V emf, whereas an alkaline cell has a 1.58-V emf. The radio has a 3.20 resistance.(a) Draw a circuit diagram of the radio and its battery. Now, calculate the power delivered to the radio (b) when using a nicad cells, each having an internal resistance of 0.0400 , and (c) when using an alkaline cell, having an internal resistance of 0.200 . (d) Does this differenceseem significant, considering that the radio's effective resistance is lowered when its volume is aimed up?
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