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Homework Statement
A section of a circuit XY shown below absorbs 50 W of power when a current I = 1.0 A passes through it as indicated by the arrow labeled i.
(a) What is the voltage difference between X and Y?
(b) What is the voltage difference across element C?
Homework Equations
V = IR
P = (V2)/R
P = (I2)R
The Attempt at a Solution
I have answers for both parts, but I'm not confident about them.
(a) P = V2/R
R = V/I
P = V2/(V/I) = IV
Vx= P/I = (50 W) (1.0 A) = 50 V
P = I2R
I =[itex]\sqrt{P/R}[/itex]
Vy= IR = [itex]\sqrt{P/R}[/itex]*R = [itex]\sqrt{(50 W)/(2 Ω)}[/itex]*(2 Ω)
= 20V
Vx - Vy = 50 V - 20 V = 30 V
(b) Wouldn't it be 0? Why would the voltage change across the capacitor?
Edit: Maybe it's not a capacitor and I'm confused?
Thanks!