Physics · Electrostatic Potential

Given below are two statements: Statement I: The dielectric constant \( K \) of a substance is a dimensionless ratio defined as \( \frac{\varepsilon}{\varepsilon_0} \). Statement II: When a dielectric slab completely fills the space between the plates of a parallel-plate capacitor, the electric field between the plates increases by a factor of \( K \) when the capacitor is isolated from the battery. In the light of the above statements, choose the most appropriate answer from the options given below:

1. A
   Both Statement I and Statement II are correct.
2. B
   Both Statement I and Statement II are incorrect.
3. C
   Statement I is correct but Statement II is incorrect.
4. D
   Statement I is incorrect but Statement II is correct.