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12th Class Physics Electric Charges and Fields Question Bank MCQ - Electric Charges and Fields

  • question_answer
    An electron enters uniform electric field maintained by parallel plates and of value \[E\,V{{m}^{-1}}\] with a velocity \[m{{s}^{-1}}\], the plates are separated by a distance d metre, then acceleration of the electron in the field is:

    A) \[\frac{Ee}{m}\]                        

    B) \[\frac{-Ee}{m}\]

    C)  \[\frac{Ee}{md}\]                                 

    D) \[Ee=\frac{d}{m}\]

    Correct Answer: A

    Solution :

     \[\frac{Ee}{m}\] We know that, \[F\text{ }=\text{ }eE\] Therefore, acceleration in electron due to force F \[a=\frac{F}{m}=\frac{eE}{m}\]


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