University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 24 - Capacitance and Dielectrics - Problems - Discussion Questions - Page 808: Q24.11

Answer

Water is a good conductor when ions are dissolved in it.

Work Step by Step

For example, salt water conducts quite well. Any ionic impurities in the water would enable charge to flow between the plates and discharge the capacitor. Also, using a free-flowing liquid between 2 closely-separated plates is a tough engineering challenge.
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