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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Self Evaluation Test - Electrostatic Potential and Capacitance

  • question_answer
    A ball of mass 1 g carrying a change \[{{10}^{-8}}C\]moves from a point A at potential 600 V to a point B at zero potential. The change in its K.E.

    A) \[-6\times {{10}^{-6}}erg\]

    B) \[-6\times {{10}^{-6}}J\]

    C) \[6\times {{10}^{-6}}J\]

    D) \[6\times {{10}^{-6}}erg\]

    Correct Answer: C

    Solution :

    [c] As work is done by the field, K.E. of the body increases by \[K.E.=W=q\left( {{V}_{A}}-{{V}_{B}} \right)\] \[={{10}^{-8}}\left( 600-0 \right)=6\times {{10}^{-6}}J\]


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