Consider the configuration shown in the figure which is a portion of a larger electrical network
For R=1 ? and currents i1=2 A,i4=?1 A,i5= ?4 A, which one of the following is TRUE?
|(A) i6= 5 A|
|(B) i6=-4 A|
|(C) Data is sufficient to conclude that the supposed currents are impossible|
|(D) Data is insufficient to identify the currents i2,i3, and i6|
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