In which of the following circuits is the cur | vedclass

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(D) At $t=0$,the inductor $L$ opposes any change in current,so it acts as an open circuit (current through it is zero).For circuit $(i)$: The entire c

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Both $(ii)$ and $(iii)$

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(D) At $t=0$,the inductor $L$ opposes any change in current,so it acts as an open circuit (current through it is zero).For circuit $(i)$: The entire circuit is open,so the current $i_1 = 0$.For circuit $(ii)$: The inductor $L$ is in series with resistor $R$. At $t=0$,the branch containing $L$ is open. The current flows through the parallel resistor $R$ connected directly to the source $E$. Thus,$i_2 = E/R$.For circuit $(iii)$: The inductor $L$ is in parallel with resistor $R$. At $t=0$,the branch containing $L$ is open. The current flows through the resistor $R$ in parallel. Thus,$i_3 = E/R$.Comparing the currents,$i_2 = i_3 = E/R$,which is greater than $i_1 = 0$. Therefore,the current is maximum in both circuits $(ii)$ and $(iii)$.

In which of the following circuits is the current maximum just after the switch $S$ is closed?

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