View Single Post
athrun200
athrun200 is offline
#1
Feb28-12, 06:51 AM
P: 276
Can Power supply be smaller than power dissipated?
Because I saw this in one question


There are 3 cells, the power supply of the two 4V cells cancel each other. (one is -4W and another one is 4W)
So the total power supply should be 16W

But in part c, the power dissipated is 4+8+2+6=20W

Power supply < power dissipated?
Attached Thumbnails
a1.jpg   q1.jpg  
Phys.Org News Partner Physics news on Phys.org
Physicists design quantum switches which can be activated by single photons
'Dressed' laser aimed at clouds may be key to inducing rain, lightning
Higher-order nonlinear optical processes observed using the SACLA X-ray free-electron laser