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NEET Sample Paper NEET Sample Test Paper-76

  • question_answer
    The electrostatic potential V at a distance r from the centre of a charged metallic sphere of radius JR for \[\operatorname{r} < R\] will vary according to relation

    A)  \[V\propto \frac{1}{r}\]             

    B)  \[V=r\]

    C)  \[V\propto \frac{1}{{{r}^{2}}}\]                     

    D)  \[V\propto {{r}^{0}}\]

    Correct Answer: D

    Solution :

    At an internal point \[(r<R)\] in a charged conducting sphere \[{{V}_{in}}={{V}_{surface}}\,\,=\,\,\frac{q}{4\pi {{\varepsilon }_{0}}R}=\,\,cons\tan t\] \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,V\propto {{r}^{0}}\]


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