Why dont birds get electocuted when they are on power lines?

AI Thread Summary
Birds do not get electrocuted on power lines because they do not create a complete circuit, as there is no potential difference between their bodies and the wires. The arrangement of power transmission lines, including the spacing and the number of wires, contributes to this safety. Typically, the wires are spaced apart to prevent accidental contact and to manage voltage distribution. In contrast, a person touching the wires while grounded would complete the circuit, leading to electrocution due to the potential difference. Understanding these electrical principles clarifies why birds can safely perch on power lines.
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3. The Attempt at a Solution [/b
Maybe because charge passes through the powerlines and doesn't stay at one spot?
 
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How are power transmission lines physically arranged? How many wires are there, and how far apart are they spaced? What are the typical AC voltages involved, and how are the voltages distributed between the wires? Why are the wires in the AC transmission lines spaced apart like that?
 
No... the circuit isn't complete. There is no potential difference. If, however, a man standing on the ground touched the same wires, he would be electrocuted, as the potential on the ground is zero and a potential difference existas across the man.
 

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