jon
lvl.3
United Kingdom
Offline
|
Do we agree that in series, each lamp will see 12v?
If we present a 12V 21W lamp with 12V potential difference, it will draw 1.75A, and consume 21W
I believe, that as both will be seeing 12V, both will consume 21W of energy, totalling 42W and the current through the circuit will be 1.75A
I Think maybe I need to actually set this up and measure it in practice.... If I set it up, and see a current draw of 1.75A (@24V) then we are indeed drawing 42W.
As I see it, these two (12V 21W) lamps, in parrallel on an adequate 12V supply will both burn brightly, drawing 21W each, totaling 42W.
To achive the same consumption in series, you would have to double the voltage across the series circuit, which we have, to near 24V.
BTW, the reason for continuing here, is not to try and be the winner, I just need to understand this stuff (which I thought I did) so need to put it to bed one way or the other.
Jon
|
|