12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Case Based (MCQs) - Alternating Currents

  • question_answer
    The capacitive reactance of a \[5\text{ }\mu F\]capacitor for a frequency of \[{{10}^{6}}\] Hz is:

    A) \[0.032\text{ }\Omega \]                        

    B) \[2.52\text{ }\Omega \]  

    C) \[1.25\text{ }\Omega \]                          

    D) \[4.51\text{ }\Omega \]

    Correct Answer: A

    Solution :

    (a) \[0.032\,\Omega \] Capacitive reactance, \[{{X}_{C}}=\frac{1}{\omega C}=\frac{1}{2\pi vC}\]             \[=\frac{1}{2\pi \times {{10}^{6}}\times 5\times {{10}^{-6}}}=0.032\,\Omega \]


You need to login to perform this action.
You will be redirected in 3 sec spinner