A) 4 A
B) 6 A
C) 3 A
D) 5 A
Correct Answer: A
Solution :
(a) 4 A From Kirchhoff's first law, in an electric circuit, the algebraic sum of the currents meeting at any junction is zero. i.e., \[\sum{i}=0\] Taking inward direction of current as positive and outward as negative, we have \[1A-3A-2A+l=0\] \[\Rightarrow l=4\,A\]
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