The subsequent problems deal with the circuit below where all voltage sources are dc and the circuit is assumed to be in steady state. Also, R1 = R2 = R3 = R4 = R.
If R3 is replaced by an closed (short) circuit and I2 is known, the current through the closed circuit (where R3 was) will be
A. I2 / 2
B. 0
C. ?I2
D. I2
E. 2I2
Answer: D
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