The subsequent problems deal with the circuit below where R1 = R2 = R.
When the transistor is in saturation, I2 is
A. (Vin + 0.7 V) / R
B. (Vout + 0.2 V) / R
C. (Vin ? 0.7 V) / R
D. Vin / R
E. (Vout ? 0.2 V) / R
Answer: C
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