Question
Download Solution PDFIn the circuit shown here, the 20 V source has an internal resistance of 1 Ω. While the current source is ideal, the value of current I is _______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFKirchhoff's Current Law
According to Kirchhoff's Current Law, The total current entering a junction or a node is equal to the charge leaving the node. The algebraic sum of every current entering and leaving the node has to be zero.
Calculation
Applying KCL at node 'A', we get:
\({V_A\over 2}-5+{V_A-20\over 8}=0\)
VA = 12 V
\(I={V_A-20\over 8}={12-20\over 8}\)
I = -1 A
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