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A pure inductor L, a capacitor C and a resistance R are connected across a battery of emf E and internal resistance r as shown in figure. Switch S_w is closed at t = 0, select the correct alternative( s) .

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current through resistance R is zero at t = 0 and $t \to \infty$

maximum charge stored in the capacitor is CE

current through resistance R is zero all the time

maximum energy stored in the inductor is equal to the maximum energy stored in the capacitor

answer is B.

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Detailed Solution

At t = 0, charge on C is zero, so p.d. across C is zero,p.d. across R is also zero. Hence there is no current in R.

At t $t = \infty$ current through L is maximum and constant, so p.d. across L is zero, therefore p.d. across R is zero. Hence no current in R.

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