WB JEE Medical WB JEE Medical Solved Paper-2014

  • question_answer
    A parallel plate capacitor is charged and then disconnected from the charging battery. If the plates are now moved farther apart by pulling at them by means of insulating handles, then

    A)  the energy stored in the capacitor decreases

    B)  the capacitance of the capacitor increases

    C)  the charge on the capacitor decreases

    D)  the voltage across the capacitor increases

    Correct Answer: D

    Solution :

     We know that The parallel plate capacitor \[C=\frac{{{\varepsilon }_{0}}.A}{d}\] When d (distance between two parallel plate) increase, then C will be decrease \[\because \] \[Q=CV\]where \[Q=\] constant \[\therefore \]  The voltage across the capacitor increases.


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