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kliker
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Homework Statement
[PLAIN]http://img258.imageshack.us/img258/9067/39943009.png
given this circuit if each of the resistors may consume maximum power = 24 W without overheating, find the maximum power that the circuit can consume
Homework Equations
P = I*V
V=I*R
The Attempt at a Solution
ok the first two are in parallel, so i found the resistance of both, which is 3/2, then we have two resistors in series and I found the total resistance which is 3/2 + 3 = 9/2
before doing this i found the I(total)
which is P = I*V => 24 = I^2*3 => I = +/- 4
having the I total and the total resistance I said
P = I^2*R = 16*9/2 = 72 W
but the book says 36, what am I doing wrong?
Thanks
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