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JEE Main 2007
Exam
JEE Main
Year
2007
Subject
Physics
Chapter
Capacitance

JEE Main 2007 · Physics · Capacitance

A parallel plate condenser with a dielectric of dielectric constant...

A parallel plate condenser with a dielectric of dielectric constant K\mathrm{K} between the plates has a capacity C\mathrm{C} and is charged to a potential  V volts\mathrm{~V ~volts}. The dielectric slab is slowly removed from between the plates and then reinserted. The net work done by the system in this process is

Options

  1. A1/2( K−1)CV21 / 2(\mathrm{~K}-1) \mathrm{CV}^2
  2. BCV2( K−1)/K\mathrm{CV}^2(\mathrm{~K}-1) / \mathrm{K}
  3. C(K−1)CV2(\mathrm{K}-1) \mathrm{CV}^2
  4. Dzero

Correct answer

D. zero

Step-by-step solution

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