Q: Four resistors are connected to a battery with a terminalvoltage of 12V, as s

Question

Q: Four resistors are connected to a battery with a terminalvoltage of 12V, as shown in the figure below. Use the followingvariables as necessary: R1=38.0 andR2=90.0. d) Determine the power delivered to the 50.0resistor.
First I used the equation for power p = v2/R =122/50 = 2.88W
then I realized that I have to find the voltage that goesthrough that specific 50 and so then used:
V50 =IeqReq = 0.1847(64.94) = 11.99V p = v2/R = 11.992/50 = 2.87W (thisis very close to the last answer so it is not the rightanswer)

Explanation / Answer

I = V/RTOT
V = 12V and R = 20+(38+50)||90 = 64.5
I = 12/64.5 = 0.186A
2. Now use current divider to find the current flowthrough 50.0.
I' = 90/(50+38+90) = 0.5056 A
So power dissipated at R=50, P = I2R =(0.5056)250 = 12.9 w

V = 12V and R = 20+(38+50)||90 = 64.5
I = 12/64.5 = 0.186A
2. Now use current divider to find the current flowthrough 50.0.
I' = 90/(50+38+90) = 0.5056 A
So power dissipated at R=50, P = I2R =(0.5056)250 = 12.9 w

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