equivalent resistance of R2 and R3
R23 = 4 * 4 / ( 4 + 4) = 2 ohm
effective potential difference
V = 15 + 20 - 25 = 10 V
voltage drop across R1
v1 = V * R1 / ( R1 + R2) = 10* 2 / ( 2 +2) = 5 V
power dissipated at R1
P1 = V1^2 / R1 = 12.5 W
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Question 8 5 pts The circuit shown in the figure below contains three resistors (R1, R2,...
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=4 Ohms, and the battery voltages are VA=25 V, Vp=15 V, and Vc=20 V. When the circuit is connected, what will be the power dissipated by R1? VC R1 + + VA VB R2 R3 1.25 W 2.0 W 12.5 W 6.25 W 8.13 W
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