Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 3 cm in diameter and carries a current of 41 A. If the bird's feet are 5.89 cm apart, what is the potential difference across its body? Copper's resistivity is 1.68 × 10-8 2 m.

Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 3 cm in diameter and carries a current of 41 A. If the bird's feet are 5.89 cm apart, what is the potential difference across its body? Copper's resistivity is 1.68 × 10-8 2 m.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 13P

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

007
Birds resting on high-voltage power lines are
a common sight. The copper wire on which a
bird stands is 3 cm in diameter and carries a
current of 41 A.
If the bird's feet are 5.89 cm apart, what
is the potential difference across its body?
Copper's resistivity is 1.68 x 10- 2 m.

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