Solved: The voltage-divider circuit shown in Fig. P3.45 is designed so that the no-load

Chapter 3, Problem 3.45

(choose chapter or problem)

The voltage-divider circuit shown in Fig. P3.45 is designed so that the no-load output voltage is 7/9ths of the input voltage. A d’Arsonval voltmeter having a sensitivity of \(100 \ \Omega / \mathrm{V}\) and a full-scale rating of 200 V is used to check the operation of the circuit.

a) What will the voltmeter read if it is placed across the 180 V source?

b) What will the voltmeter read if it is placed across the \(70 \ \mathrm{k} \Omega\) resistor?

c) What will the voltmeter read if it is placed across the \(20 \ \mathrm{k} \Omega\) resistor?

d) Will the voltmeter readings obtained in parts (b) and (c) add to the reading recorded in part (a)? Explain why or why not.