#w higher voltage u can get more *wattage* bc ur increasing voltage w the same current
Explore tagged Tumblr posts
Visit Tumblr Blog
Explore Tumblr blogs with no restrictions, modern design and the best experience.
Last Seen Tumblr Blogs
Fun Fact
Tumblr’s reach among the 26-to-35-year-olds in the US is 11%.
Text
Just heard a YouTube science communicator (who should know better) say "higher voltage means you can get more current in the same cable" and felt my skin crawl for a second
#volt = difference in potential energy#current is the movement of the charge which is what the wire is actually facilitating#voltage is a difference a single point in a cable has no voltage thus the voltage is irrelevant for single points in a cable#w higher voltage u can get more *wattage* bc ur increasing voltage w the same current#watt=volt*amp#the voltage limitation for a single type of cable is also bc its a difference#its rating the max difference between a point in the wire & the environment/another point in the cable#current rating on a cable is meant to b independent of voltage so long as the voltage is within rating of the insulation#like obv it was probably a brain fart and he understood that but that should b one of those things where you immediately notice#(note - movement of charge is different than movement of electrons. electrons r fairly slow)#(and obv things like 'single points' are abstractions so theres nuance when you rly need to b precise#but for most nontechnical applications dw abt it)
20 notes
·
View notes