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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2006

  • question_answer
    When the key K is pressed at tune\[t=0,\]which of the following statements about the current I in the resistor AB of the given circuit is true

    A) \[i=2\text{ }mA\]at all t

    B)  \[i\]oscillates between 1mA and 2mA

    C)  \[i=1\text{ }mA\] at all t

    D)  at \[t=0,i=2\text{ }mA\]and with time it goes to 1mA

    Correct Answer: D

    Solution :

     At time\[t=0\]ie when capacitor is charging, current\[i=\frac{2}{1000}=2mA\] When capacitor is full charged, no current will pass through it, hence current through the circuit, \[i=\frac{2}{2000}=1\,mA\]


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