system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a limit on how long a power cord can be?

Probably a stupid question, but I was joking around about ice frozen on the moon, and how we can melt it by using a hair drier with a super long cord. This got me thinking though… if there was a cord that long, there'd be a huge delay as the electricty travels up the wire.

But then I thought even more… would the electricity even reach the hair drier? Is there a limit to how far electricity can travelalong a wire? I imagine some of the energy is lost when it has to travel. So, would a power cord to the moon even work?
gpt
Short answer: yes. The longer a given wire gets, the greater electrical resistance it has. Resistance causes a voltage drop. If the wire is long enough, that voltage drop would be sufficient that the device would fail to work.