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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    A parallel plate condenser has a capacitance \[50\mu F\] in air and \[110\mu F\]when immersed in an oil. The dielectric constant \['k'\] of the oil is               [CPMT 1985; J & K CET 2004]

    A)                    0.45

    B)                                      0.55

    C)                    1.10                                  

    D)            2.20

    Correct Answer: D

    Solution :

               \[{{C}_{medium}}=K\,{{C}_{air}}\] Þ \[K=\frac{{{C}_{medium}}}{{{C}_{air}}}=\frac{110}{50}=2.20\]


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