Find the current through R1 in the given circuit.

A. 0.16 A
B. 0.24 A
C. 0.2 A
D. 0.04 A
Answer: Option A
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Related Questions on Circuit Theorems and Conversions
What is the Thevenin equivalent (VTH and RTH) for the circuit given?
A. 6.4 V, 422 Ω
B. 6.4 V, 560 Ω
C. 6.4 V, 680 Ω
D. 30 V, 422 Ω
A. 676 mA
B. 245 mA
C. 431 mA
D. 75 mA
Using Nodal analysis,
At node 1 -> v1/120 - 0.2 + (v1-v2/68) =0.
At node 2 -> (v2- v1)/68 + 0.04 = 0.
Thus solving simultaneously v1 and v2 equations we get v1= 19.2.
And so, at r2, I = 19.2/120 = 0.16.