Power dissapatied by a resistor

[talaroue]

Homework Statement

How much power is dissipated by R1 resistor? (R1=15 W, R2=25 W, V=9 V.)

Homework Equations

I=V/R

P=I^2R

The Attempt at a Solution

Since it is a series 1/Req=(1/R1)+(1/R2)

Then I=V/R= .96 A

so Then i just simply plugged in I in P=I^2R which is apparently wrong, but I thought this is right. What am i doing wrong?

 

[Dick]

You are right, the resistors are in series. So why are you using the Req formula for resistors in parallel?

 

[talaroue]

...let me get back to you