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NEET Sample Paper NEET Sample Test Paper-71

  • question_answer
    Force acting upon a charged particle kept between the plates of a charged condenser is F. If one plate of the condenser is removed, then the force acting on the same particle will become

    A) 0                                 

    B) F/2

    C) F                                 

    D) 2F

    Correct Answer: B

    Solution :

    Initially \[F=qE\,\,and\,\,E=\frac{\sigma }{{{\varepsilon }_{0}}}\,\,\,\,\,\,\,\,\therefore \,\,\,\,\,\,\,F=\frac{q\sigma }{{{\varepsilon }_{0}}}\] If one plate is removed, then E becomes \[\frac{\sigma }{2{{\varepsilon }_{0}}}\] \[F'=\frac{q\sigma }{2{{\varepsilon }_{0}}}=\frac{F}{2}\]


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