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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2006

  • question_answer
    A L-R circuit consists of an inductance of 8 mH and a resistance of \[4\,\Omega .\] The time constant of the circuit is

    A)  2ms                                      

    B)  12ms

    C)  32ms                                   

    D)  500s

    Correct Answer: A

    Solution :

    \[L=8mH=8\times {{10}^{-3}}H,\] \[R=4\Omega \] Time constant of L-R circuit \[=\frac{L}{R}=\frac{8\times {{10}^{-3}}}{4}\]                                                 \[=2\times {{10}^{-3}}s.\]                                                 \[=2ms\]


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