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BITSAT 2018 Solved Question Paper
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© examsnet.com
Question : 3
Total: 150
In the circuit shown, the symbols have their usual meanings. The cell has emf E. X is initially joined to Y for a long time. Then, X is joined to Z. The maximum charge on C at any later time will be
E
R
√
L
C
E
R
2
√
L
C
E
√
L
C
2
R
E
√
L
C
R
Validate
Solution:
Current in inductor =
E
R
∴ its energy =
1
2
L
E
2
R
2
Same energy is later stored in capacitor
Q
2
2
C
=
1
2
L
E
2
R
2
⇒ Q =
√
L
C
E
R
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