n ammeter model consists of an ideal ammeter in series with a 20-22 resistor. It is connected with a current source and an unknown esistor Rx as shown in the given figure. The ammeter reading is noted. When a potentiometer R is added and adjusted until the mmeter reading drops to one half its previous reading, then R = 67 2. What is the value of Rx? he value of Rx is 20 92 S2. Ammeter model

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter17: Resistive-inductive Series Circuits
Section: Chapter Questions
Problem 1PA: An AC electric motor is connected to a 240-V, 60-Hz source. A clamp-on ammeter with a peak hold...
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An ammeter model consists of an ideal ammeter in series with a 20- resistor. It is connected with a current source and an unknown
resistor Rx as shown in the given figure. The ammeter reading is noted. When a potentiometer R is added and adjusted until the
ammeter reading drops to one half its previous reading, then R = 67 2. What is the value of Rx?
The value of Rx is
A
20 Ω
Rx
Ω.
Ammeter
model
Transcribed Image Text:An ammeter model consists of an ideal ammeter in series with a 20- resistor. It is connected with a current source and an unknown resistor Rx as shown in the given figure. The ammeter reading is noted. When a potentiometer R is added and adjusted until the ammeter reading drops to one half its previous reading, then R = 67 2. What is the value of Rx? The value of Rx is A 20 Ω Rx Ω. Ammeter model
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