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Consider the LR circuit shown in the figure. If the switch S is closed at t = 0 then the amount of charge that passes through the battery between t = 0 and t = R L is : i E S R L

1. 2 R EL 3 . 7
2. 2 R EL 7 . 2
3. 2 R 3 . 7 EL
4. 2 R 7 . 2 EL

Correct answer: 2 R 7 . 2 EL

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