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GATE ECE 2009 | Question-28

The switch in the circuit shown was on position $a$ for a long time, and is moved to position $b$ at time $t=0$. The current $i(t)$ for $t>0$ is given by

  1. $0.2 e^{-125 t} u(t) \; \mathrm{mA}$
  2. $20 e^{-1250 t} u(t) \; \mathrm{mA}$
  3. $0.2 e^{-1250 t} u(t) \; \mathrm{mA}$
  4. $20 e^{-1000 t} u(t) \; \mathrm{mA}$
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