Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 23 - Think and Explain - Page 449-450: 84

Answer

In both cases, when more parallel branches are added, the overall resistance drops.

Work Step by Step

This is because the moving objects have a greater choice of paths to get to their destination.
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