3-10 An ac voltmeter is to be used to measure the rms voltage across the 15-k resistor in the circuit shown in Fig. 3-27. If the voltmeter uses half-wave rectification and a 100-μA d'Arsonval meter movement, if it is set on its 10-V range, and if R = 1.5 kQ, what reading will be obtained? E = 20 Vrms R₁ 25 k R₂ 15 k FIGURE 3-27 Circuit for Problem 3-10. 3-11 Two different ac voltmeters are used to measure the voltage across the resistor in the circuit shown in Fig. 3-28. Meter A has ac 22-k ATORY EXPERIMENTS E = 150 Vms R₁ = 39 ks2 R₂-22 ks2 FIGURE 3-28 Circuit for Problem 3-11. sensitivity of 10 kn/V. a guaranteed accuracy of 98% at full scale, and is set on its 200-V range. Meter B has an ac sensitivity of 4 kn/V. a guaranteed accuracy of 98.5% at full scale, and is set on its 100-V range. Which meter will provide a more accurate result? 883 83