The subsequent problems deal with the switched RC circuit below. Assume that the capacitor has no charge to begin with, and assume that VA and VB are constant dc voltages.
A long time after the switch has been closed (i.e., the circuit is in steady state), what is the correct expression for VC, given the polarity shown?
A. 0
B. VA ? VB
C. VA
D. VB ? VA
E. VB
Answer: D
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