easuring a voltage, a vol lently, the voltage measured is only to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1830- resistors connected in series across a 70.0-V battery. (a) Find the voltage across one of the resistors. (b) A voltmeter has a full-scale voltage of 70.0 V and uses a galvanometer with a full-scale deflection of 4.34 mA. Determine the voltage that this voltmeter registers when it is connected across the resistor used in part (a). R Voltmeter Ry www V R
easuring a voltage, a vol lently, the voltage measured is only to the voltage present when the voltmeter is not connected. Consider a circuit consisting of two 1830- resistors connected in series across a 70.0-V battery. (a) Find the voltage across one of the resistors. (b) A voltmeter has a full-scale voltage of 70.0 V and uses a galvanometer with a full-scale deflection of 4.34 mA. Determine the voltage that this voltmeter registers when it is connected across the resistor used in part (a). R Voltmeter Ry www V R
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text: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 1830- resistors connected in series
across a 70.0-V battery. (a) Find the voltage across one of the resistors. (b) A voltmeter has a full-scale voltage of 70.0 V and uses a
galvanometer with a full-scale deflection of 4.34 mA. Determine the voltage that this voltmeter registers when it is connected across
the resistor used in part (a).
(a) Number i 35.15
(b) Number i 19.16
ww
R
Units V
Units V
+
Voltmeter
Rv
V
R
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Equivalent of resistance of two resistors =
current in circuit =
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