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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
19
DC Circuits
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19-1: Emf and Terminal Voltage
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19-2: Resistors in Series and Parallel
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19-3: Kirchhoff's Rules
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19-4: Emfs Combined, Battery Charging
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19-5: Capacitors in Series and Parallel
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19-6: RC Circuits
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19-8: Ammeters and Voltmeters
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 61
Q

A milliammeter reads 35 mA full scale. It consists of a 0.200.20-Ω\Omega resistor in parallel with a 3333-Ω\Omega galvanometer. How can you change this ammeter to a voltmeter giving a full-scale reading of 25 V without taking the ammeter apart? What will be the sensitivity (Ω/V)(\Omega\textrm{/V}) of your voltmeter?

A
  1. 710  Ω710 \; \Omega
  2. 29  Ω/V29 \; \Omega\textrm{/V}
Giancoli 7th Edition, Chapter 19, Problem 61 solution video poster
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COMMENTS
By markch23 on Fri, 3/4/2022 - 4:15 AM

why does adding Rser Resistor in series turn the ammeter into a voltmeter exactly? thanks

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