Help!!! Please explain your answer.... Calculate the power delivered to each res

Question

Help!!! Please explain your answer....

Calculate the power delivered to each resistor in the circuit shown in figure P28.15 where R1= 3.00 omega, R2=1.00 omega, and V=9.0 V. Your response differs from the correct answer by more than 10%. Double check your calculations. W 4.00 omega resistor Your response differs from the correct answer by more than 10%. Double check your calculations. W resistor R2 Your response differs from the correct answer by more than 100%. W 1.00 omega resistor Your response differs from the correct answer by more than 100%. W

Explanation / Answer

equivalent resistance

R2 and 1ohms are in parallel

1*1/(1+1)=0.5 ohms

R1 ,4 and 0.5 are in series

Req=3+4+0.5=7.5 ohms

Total current flowing in the circuit is

I=V/Req=9/7.5=1.2 A

So current flowing in each resistor

IR1=I=1.2 A

I4=I=1.2 A

IR2=I/2=0.6 A
I1=0.6 A

so power dissipated in each resistor is

P=I2R

a)

PR1=1.22*3=4.32 Watts

b)

P4=1.22*4=5.76 Watts

c)

PR2=0.62*1=0.36 Watts

d)

P1=0.62*1=0.36 W

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