-See Figure 9-5. Which equation describes node X?
A) I3 = I2 + I1
B) I1 + I2 + I3 = 0
C) -I1 - I2 - I3 = 0
D) I3 = I2 - I1

Name: -See Figure 9-5. Which equation describes node X? A) I3 = I2 + I1 B) I1 + I2 + I3 = 0 C) -I1 - I2 - I3 = 0 D) I3 = I2 - I1
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Question

-See Figure 9-5. Which equation describes node X?
A) I3 = I2 + I1 
B) I1 + I2 + I3 = 0 
C) -I1 - I2 - I3 = 0 
D) I3 = I2 - I1

Quizplus · Accepted Answer

Node X is the point where currents I1, I2, and I3 meet. By Kirchhoff's current law, the sum of the currents entering a node must equal the sum of the currents leaving the node. Therefore, I3 = I2 + I1.

-See Figure 9-5. Which Equation Describes Node X