Electricity and resistance Question

AI Thread Summary
The discussion revolves around calculating the voltage experienced by a bird standing on an electric transmission line carrying 2500 A, with a resistance of 0.000025 ohms per meter and its feet 4 cm apart. Participants clarify that the resistance for the 4 cm length can be calculated by multiplying the resistance per meter by the length in meters (0.04 m), resulting in total resistance. Using Ohm's Law (V = IR), the voltage can be determined by multiplying the current by the calculated resistance. The area is deemed unnecessary for this specific calculation. Ultimately, the focus is on applying Ohm's Law to find the voltage across the distance between the bird's feet.
PerpetuallyFrustrate
A bird stands on a electric transmission line carring 2500 A. The line has .000025 ohms resistance per meter and the bird's feet are 4 cm apart. What voltage does the bird feel?

I know R = p L/A, but how do i figure out the area. Also do I use 4 cm as the length?
 
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HInt

Could you figure the voltage if the bird had its feet 1 meter apart?
 
No

I don't understand whether the 4 cm is the L and if so then what is the area?
 
If you know the resistance per meter (0.000025) and the number of meters (0.04) their product should give you the total resistance in the 4 cm length. Knowing the current, it should be a staightforward use of Ohm's Law to get the voltage across that section of the wire. I'm not sure why you would need to use the area at all.
 

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