College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 17 - Electric Current and Resistance - Learning Path Questions and Exercises - Multiple Choice Questions - Page 617: 5


(c) eight

Work Step by Step

As the connection is in series, Overall output voltage= sum of individual voltages Batteries are identical. Therefore Overall output voltage= n$\times$ voltage of one battery where n is the number of batteries connected. $\implies 12\,V=n\times1.5\,V$ Or $n=\frac{12\,V}{1.5\,V}=8$
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