- #1
crom1
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Homework Statement
Two resistors of equal rated voltages ##V_n##, and different rated powers ##P_{n1}= 50 W## and ##P_{n2}= 100 W## are connected in series on source of rated voltage. Find total power of a circuit.
Homework Equations
[/B]##P=\frac{U^2}{R} ##, ## R=R_1+R_2 ##The Attempt at a Solution
I am not quite sure what rated voltage is. I mean if two resistors have same voltage, and are connected in series, shouldn't they have same power? (obviously the word "rated" makes some difference but I don't know how).
My attempt was that using that voltage of a source is sum of voltages of the resistors (which it really is in series ) and using *relevant equations* but instead of getting ##P=33.33 W ## I get ##P=133.33 W ## . I notice that If ##V_{source}= V_{n}## I would get the right result.
Any help?