The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).
Using a KVL equation in loop A, which expression below is valid?
A. V1 = ?I1R1 ? (I1 ? I2)R2
B. V1 = I1R1 + (I1 ? I2)R2
C. V1 = ?I1R1 ? I2R2
D. V1 = I1R1 + I2R2
E. V1 = I1R1 + (I1 + I2)R2
Answer: E
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