Kirchhoffs Junction Rule
At a junction in an electrical circuit, three branches have currents of 4.0 A entering, 2.5 A leaving, and 3.0 A entering the junction. A fourth branch connected to the junction carries an unknown current, I. Which of the following correctly describes the magnitude and direction of I?
A
I = 9.5 A leaving the junction
B
I = 4.5 A entering the junction
C
I = 4.5 A leaving the junction
D
I = 1.5 A leaving the junction
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