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Sparks will occur between the plates of an air-filled

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 18CQ Chapter 19

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 18CQ

Problem 18CQ

Sparks will occur between the plates of an air-filled capacitor at lower voltage when the air is humid than when dry. Explain why, considering the polar character of water molecules.

Step-by-Step Solution:
Step 1 of 3

Solution 18CQ

 

Moist air contains water. Water is a polar molecule and gets polarized when it comes between the plates of capacitor; a dielectric is formed due to polarization.

The Coulomb force between charge on the plates and the water molecules is attractive and also very strong, as they are very near to each other, this accumulates more charge onto the plates hence creates spark.

Step 2 of 3

Chapter 19, Problem 18CQ is Solved
Step 3 of 3

Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

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Sparks will occur between the plates of an air-filled