In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage measured is only an approximation to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1340- resistors connected in series across a 90.0-V battery. (a) Find the voltage across one of the resistors. (b) A voltmeter has a full-scale voltage of 90.0 V and uses a galvanometer with a full-scale deflection of 3.94 mA. Determine the voltage that this voltmeter registers when it is connected across the resistor used in part (a). Voltmeter Rv (a) Number i (b) Number i ww R Units Units V www R

In measuring a voltage, a voltmeter uses some current from the circuit. Consequently, the voltage measured is only an approximation to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1340- resistors connected in series across a 90.0-V battery. (a) Find the voltage across one of the resistors. (b) A voltmeter has a full-scale voltage of 90.0 V and uses a galvanometer with a full-scale deflection of 3.94 mA. Determine the voltage that this voltmeter registers when it is connected across the resistor used in part (a). Voltmeter Rv (a) Number i (b) Number i ww R Units Units V www R

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 10.6CYU: Check Your Understanding In considering the following schematic and the power supplied and consumed...

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