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(#M40027813) IIT-JEE question 2011 question Keep an EYE

In an LCR circuit both switches
are open initially. Now switch S1 is closed S2 kept
open. (q is charge on the capacitor and τ = RC is
Capacitive time constant). Which of the following
statement is correct ?
(1) At t = 2τ, q = CV (1 – e–2)
(2) At t =
2
τ , q = CV (1 – e–1)
(3) Work done by the battery is half of the energy
dissipated in the resistor
(4) At t = τ, q = CV/2

Asked In IIT-JEE MAN (12 years ago)

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