R1 R2 R3 20 A 2 A 0,2 A
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
Section: Chapter Questions
Problem 22RQ
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Question
A galvanometer has a resistance in Rg = 40 Ω, carrying a maximum current of 4 mA. Determine the size of the resistors R₁, R₂ and R3 if the galvanometer is to be used as an ammeter capable of measuring potential differences of 0.2 A, 2 A and 20 A
![R1
R2
R3
20 A
2 A
0,2 A](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F54a96911-1c99-4434-a827-2eb388281dd7%2F825028b0-cb2b-45ea-80d2-311d3533a676%2Fcoyj28_processed.png&w=3840&q=75)
Transcribed Image Text:R1
R2
R3
20 A
2 A
0,2 A
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