An uncharged parallel plate capacitor having a dielectric of constant $K$ is connected to a similar air cored parallel capacitor charged to a potential $V$. The two capacitors share charges and the common potential is $V$. The dielectric constant $K$ is
  • A$\frac{V^{\prime}-V}{V^{\prime}+V}$
  • B$\frac{V^{\prime}-V}{V^{\prime}}$
  • C$\frac{V^{\prime}-V}{V}$
  • D$\frac{V-V^{\prime}}{V^{\prime}}$
Medium
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