Part A Describe how to use this galvanometer to make an ammeter to read currents up to 35 A. A galvanometer has an internal resistance of 31 N and deflects full scale for a 45-µA current. O A resistor must be placed in series with the galvanometer. O A resistor must be placed in parallel with the galvanometer. Submit Request Answer Part B What is the value of this resistor? Express your answer to two significant figures and include the appropriate units. R = Value Units Submit Request Answer Part C Describe how to use this galvanometer to make a voltmeter to give a full-scale deflection of 300 V. O A resistor must be placed in parallel with the galvanometer. O A resistor must be placed in series with the galvanometer.

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 55P: A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any...
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Part A
Describe how to use this galvanometer to make an ammeter to read currents up to 35 A.
A galvanometer has an internal resistance of 31 N
and deflects full scale for a 45-µA current.
A resistor must be placed in series with the galvanometer.
A resistor must be placed in parallel with the galvanometer.
Submit
Request Answer
Part B
What is the value of this resistor?
Express your answer to two significant figures and include the appropriate units.
HẢ
R =
Value
Units
Submit
Request Answer
Part C
Describe how to use this galvanometer to make a voltmeter to give a full-scale deflection of 300 V.
A resistor must be placed in parallel with the galvanometer.
A resistor must be placed in series with the galvanometer.
Transcribed Image Text:Part A Describe how to use this galvanometer to make an ammeter to read currents up to 35 A. A galvanometer has an internal resistance of 31 N and deflects full scale for a 45-µA current. A resistor must be placed in series with the galvanometer. A resistor must be placed in parallel with the galvanometer. Submit Request Answer Part B What is the value of this resistor? Express your answer to two significant figures and include the appropriate units. HẢ R = Value Units Submit Request Answer Part C Describe how to use this galvanometer to make a voltmeter to give a full-scale deflection of 300 V. A resistor must be placed in parallel with the galvanometer. A resistor must be placed in series with the galvanometer.
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A galvanometer is an instrument that can detect and measure small amounts of current in an electrical circuit. 

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