Question

Part A Review Constan A 200 kn resistor is connected from the 100 V terminal to the common terminal of a dual scale voltmeter, as shown in Floure 1). This modified voltmeter is then used to measure the voltage across the 600 resistor in the circuit in gure 2) What is the reading on the 820 V scale of the motor? Assume that both scales of the given dual-scale voltmeter were recalbrated when the 200 kn resistor was connected to its terminals, so 100 V and 820 V are not actually the scale readings of the modified voltmeter Express your answer to three significant figures and include the appropriate units. v. 40000 V Figure 1 of 2 Submit Previous Request Awe 820 V X Incorrect: Try Again; 19 attempts remaining 360 kn 1100 V $49.95 kn Part 8 3200 kn 100 mV 2 mA What is the percentage of error in the measured vorage? Express your answer as a percentage using three significant figures Common V0 AED 1 vec P Pearson Copyright 2020 Pearson Education Inc. All rights reserved. Terms of Use Privacy Policy Permissions Contact Us

Answer 1

Now: 0,05ks is in series of 49,95kr Soln: T 220V 1 ° 360Kn 100 V 349.95KL, 200K 100 mV 2MA Common Part Internal resistance of meter 100 mv U 50 s = 0,05kn 2 MA 49.95 +0.057 50 Kn Now, sok is in pparallel with 2ooks - Sok) 1(200 kg 50 X 200 40kn 50+200

Now reading in 820 V scale u 40K 40K tibok x 8.20 V (Voltage divider rule) 40K 400k X 810 82 V Part B Percentage of error in the measured voltage = Vtheoretical – V measured x 100% V theoreetical - x 100 % 100- 82 100 18%