A first order circuit is excited with a dc source. The current i(t) t – McqOptions

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1.	A first order circuit is excited with a dc source. The current i(t) through any element of the circuit can be written as (if and ii are the final and initial values, respectively, of the current)
A.	\({i_i} - \left( {{i_i} - {i_f}} \right){e^{\frac{{ - t}}{T}}}\)
B.	\({i_f} - \left( {{i_f} - {i_i}} \right){e^{\frac{{ - t}}{T}}}\)
C.	\({i_i} - \left( {{i_f} - {i_i}} \right){e^{\frac{{ - t}}{T}}}\)
D.	\({i_f} - \left( {{i_i} - {i_f}} \right){e^{\frac{{ - t}}{T}}}\)
Answer» C. \({i_i} - \left( {{i_f} - {i_i}} \right){e^{\frac{{ - t}}{T}}}\)

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