More length in wire

[Life24]

Hello,
When we increase length of wire , we have voltage drop. why?
Thanks

 

[donkey]

because simply put, a wire has resistance. over long lengths its noticeable. voltage and current can be affected.

 

[Ratch]

Hello,
When we increase length of wire , we have voltage drop. why?
Thanks

You should be more specific. For instance, if I apply 12 volts across 1200 feet of wire, then there will be a 12 volt drop across the total 1200 feet of wire. Now, if I increase the length of wire to 2400 feet, then there still will be a 12 volt drop across the total wire. Is that what you wanted to know?

Ratch

 

[Harald Kapp]

Is that what you wanted to know?

I doubt it. Donkey's answer is more to the point. Voltage drop along a length of wire is the product of the current through this wire and the resistance of the wire: V=I*R.
Therefore voltage drop increases if the resistance increases aka longer wire (of the same thickness, of course) or more current (higher load).
Essentialy the wire and the load form a resistive voltage divider

 

[davenn]

I doubt it. Donkey's answer is more to the point.

you and Donkey may well be right

But I suggest it seems ( as Ratch hinted at) that the Op doesn't really understand the meaning of voltage drop
considering how vague the question was


Dave

 

[Harald Kapp]

But I suggest it seems ( as Ratch hinted at) that the Op doesn't really understand the meaning of voltage drop
considering how vague the question was

Right, especially in view of his other thread which I just came across.