Submitted by nopunterino t3_117aai8 in headphones
hfcobra t1_j9dljs4 wrote
Reply to comment by blorg in Headphone jack tier list, cuz why not by nopunterino
W=VxA
Not sure where you get 4W=2VxA
blorg t1_j9dw8zp wrote
For a constant resistance as voltage increases current also increases proportionally (Ohm's law, I=V/R).
As current also increases proportionally, the increase in power is the square of the voltage increase.
It's also the square of the current increase, you can use that either.
But you can't have voltage increase with no current increase, they are linked. Unless there is a proportionate change in resistance with increasing voltage, which there isn't in headphones.
Shredder-sama t1_j9g8yw8 wrote
P=V^2 /R -> V(x2)^2 /R(no change) you get a P(x4) change.
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