Electro Magnetic Induction And Alternating Currents Question 206

Question: In an LCR circuit as shown below 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 statements is correct?

Options:

A) At, t=0, q=CV (1-e)

B) At, t=τ , q=CV/2

C) At, t=2τ , q=CV(1ee)

D) At, t=2τ , q=CV(1e1)

Show Answer

Answer:

Correct Answer: C

Solution:

  • Charge on he capacitor at any time t is given by q=CV (1et/τ)att=2τ q=CV (1-e2)


NCERT Chapter Video Solution

Dual Pane