NEET Sample Paper NEET Sample Test Paper-9

  • question_answer
    A parallel plate capacitor has two layers of dielectrics as shown in figure. The capacitor is connected across a battery, the ratio of potential difference across the dielectric layers is:

    A)  \[4/3\]                         

    B)  \[1/2\]

    C)  \[1/3\]                         

    D)  \[3/2\]

    Correct Answer: D

    Solution :

    Suppose electric field in dielectric are \[{{E}_{1}}\] and \[{{E}_{2}}\]                 \[\Rightarrow \]               \[\frac{\Delta {{V}_{1}}}{\Delta {{V}_{2}}}=\frac{{{E}_{1}}d}{{{E}_{2}}2d}=\frac{3}{2}\]    \[\left( \because \,\,\frac{{{E}_{1}}}{{{\varepsilon }_{1}}}=\frac{{{K}_{2}}}{{{K}_{1}}}=3 \right)\]

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