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Alternating Current question

2013 · Shift 0 · Q56
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Alternating Current question

2013 · Shift 0 · Q56

JEE MainPhysicsAlternating CurrentMCQ+4 / −1
In an LCRLCRLCR circuit as shown below both switches are open initially. Now switch S1{S_1}S1​ is closed, S2{S_2}S2​ kept open. (qqq is charge on the capacitor and τ=RC\tau =RCτ=RC is Capacitance time constant). Which of the following statement is correct ? JEE Main 2013 (Offline) Physics - Alternating Current Question 161 English
  1. A
    Work done by the battery is half of the energy dissipated in the resistor
  2. B
    t= τ, q=CV/2t = \,\tau ,\,q = CV/2t=τ,q=CV/2
  3. C
    At t= 2τ, q=CV(1−e−2)t = \,2\tau ,\,q = CV\left( {1 - {e^{ - 2}}} \right)t=2τ,q=CV(1−e−2)
  4. D
    At t= 2τ, q=CV(1−e−1)t = \,2\tau ,\,q = CV\left( {1 - {e^{ - 1}}} \right)t=2τ,q=CV(1−e−1)
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