The circuit shown in Fig. 3-13 is a voltage divider, also called an attenuator. When it is a single resistor with an adjustable tap, it is called a potentiometer, or pot. To discover the effect of loading, which is caused by the resistance R of the voltmeter VM, calculate the ratio V_out/V_in for 

(a) R = ∞, 

(b) 1 MΩ, 

(c) 10 kΩ, and

(d) 1 kΩ.

Transcribed Image Text:

Vin 2250 22 250 22 1 Vou VM R