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Why isn’t a bird sitting on a high-voltage power line

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

Solution for problem 6CQ Chapter 20

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 6CQ

Problem 6CQ

Why isn’t a bird sitting on a high-voltage power line electrocuted? Contrast this with the situation in which a large bird hits two wires simultaneously with its wings.

Step-by-Step Solution:
Step 1 of 3

Solution 6CQ

The bird sitting on an electric line has both its legs at the same potential, ie the supply voltage of 110V  (or 220V as per the country standard). Hence no current flows through its body and thus it does not get electrocuted. However when bird with long wings touch both the lines simultaneously, a potential difference equal to the supply voltage is formed across its wings. Thus current flows through the bird electrocuting it.

Step 2 of 3

Chapter 20, Problem 6CQ is Solved
Step 3 of 3

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

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Why isn’t a bird sitting on a high-voltage power line