054 When the lights of a car are Lights switched on, an ammeter in series with them reads 10.0 A and a voltmeter connected across them reads 12.0 V (Fig. 27-60). When the electric starting motor is turned on, the ammeter reading drops to 8.00 A and the lights dim somewhat. If the internal resistance of the battery is 0.0500 N and that of the ammeter is negligible, what are (a) the emf of the battery and (b) the current through the starting motor when the lights are on? Starting motor

054 When the lights of a car are Lights switched on, an ammeter in series with them reads 10.0 A and a voltmeter connected across them reads 12.0 V (Fig. 27-60). When the electric starting motor is turned on, the ammeter reading drops to 8.00 A and the lights dim somewhat. If the internal resistance of the battery is 0.0500 N and that of the ammeter is negligible, what are (a) the emf of the battery and (b) the current through the starting motor when the lights are on? Starting motor

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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Question

054 When the lights of a car are
Lights
switched on, an ammeter in series with
them reads 10.0 A and a voltmeter
connected across them reads 12.0 V (Fig.
27-60). When the electric starting motor is
turned on, the ammeter reading drops to
8.00 A and the lights dim somewhat. If the
internal resistance of the battery is 0.0500
N and that of the ammeter is negligible,
what are (a) the emf of the battery and (b)
the current through the starting motor
when the lights are on?
Starting
motor

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