Electro Magnetic Induction And Alternating Currents Question 200

Question: In given RC circuit, capacitance of capacitor $ C_{1}=3\mu F $ and $ C_{2}=1\mu F $ . It is given that time constant of circuit between A and B is 3 millisecond. Value of R will be

Options:

A) $ 1,\Omega $

B) $ 10,\Omega $

C) $ 100,\Omega $

D) $ 1000,\Omega $

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Answer:

Correct Answer: D

Solution:

  • Equivalent circuit can be drawn as below $ RC=3\times {{10}^{-3}}sec $

    $ R\times 3\times {{10}^{-,6}}=3\times {{10}^{-,3}} $

    $ R=10000,\Omega $



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