Question

The circuit shown in the figure below contains three resistors (R1, R2, and R3) and three batteries (VA, VB, and VC). The resistor values are: R1=2 Ohms, R2=R3=6 Ohms, and the battery voltages are VA=25 V, VB=15 V, and VC=20 V. When the circuit is connected, what will be the power dissipated by R2?

a) 1.0 W

b) 2.0 W

c) 5.0 W

d) 6.0 W

e) 7.5 W



Vc R VA VB R2 { } R3
0 0
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Answer #1

51 = VB + Ve - VA = 15 + 20-25 = 10 ve R = €=36 R, 2 Di RI R! VB 3i+z R2 + VA-ve - VB = 0 R3 i = 2A so power dissipated 12 R₂

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