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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    The maximum electric field that can be held in air without producing ionisation of air is \[{{10}^{7}}V/m.\] The maximum potential therefore, to which a conducting sphere of radius 0.10 m can be charged in air is

    A) \[{{10}^{9}}V\]          

    B)        \[{{10}^{8}}V\]

    C) \[{{10}^{7}}V\]          

    D)        \[{{10}^{6}}V\]

    Correct Answer: D

    Solution :

    [d] \[E={{10}^{7}}{V}/{m}\;\] \[r=0.10m\] \[E=\frac{V}{r}\] \[V=Er={{10}^{7}}\times \frac{10}{100}\] \[V={{10}^{6}}V\]


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