Problem

An ammeter model consists of an ideal ammeter in series with a 20-Ω resistor. It is connec...

An ammeter model consists of an ideal ammeter in series with a 20-Ω resistor. It is connected with a current source and an unknown resistor Rx as shown in Fig. 2.133. 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 = 65 Ω. What is the value of Rx?

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Solutions For Problems in Chapter 2

82CP
83CP

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