1. Loading error estimation: as we use voltmeter to measure the voltage drop across a resistor Ro, it is common that we induce the loading error by incorporating the impedance of voltmeter, R₁, parallelly into the measured portion of circuit, as shown in the right figure. a) Please derive the expression of practical voltage drop across a resistor Ro measured by voltmeter. b) Please derive the expression of the absolute loading error. c) Please derive the expression of the relative loading error. Ro R₁ R₁

1. Loading error estimation: as we use voltmeter to measure the voltage drop across a resistor Ro, it is common that we induce the loading error by incorporating the impedance of voltmeter, R₁, parallelly into the measured portion of circuit, as shown in the right figure. a) Please derive the expression of practical voltage drop across a resistor Ro measured by voltmeter. b) Please derive the expression of the absolute loading error. c) Please derive the expression of the relative loading error. Ro R₁ R₁

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter30: Dc Motors

Section: Chapter Questions

Problem 6RQ: What is CEMF?

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