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Q.

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 Sw is closed at t = 0, select the correct alternative(s).

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a

Current through resistance R is zero all the time

b

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

c

Maximum charge stored in the capacitor is CE

d

Current through resistance R is zero at t = 0 and t

answer is B.

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Detailed Solution

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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, 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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