Capacitance of a parallel plate capacitor in the presence of insulator having dielectric constant E is C if the dielectric is removed from plates, then new capacitance will be:

Explanation

The capacitance of a parallel plate capacitor with a dielectric is given by the formula C = E * (ε₀ * A / d), where E is the dielectric constant, ε₀ is the permittivity of free space, A is the area of the plates, and d is the distance between them. When the dielectric is removed, the new capacitance reduces to C/E, as the dielectric constant no longer contributes to increasing the capacitance. Thus, removing the dielectric reduces the capacitance by a factor of the dielectric constant. The other options are incorrect because they either incorrectly suggest an increase or do not accurately reflect the relationship between capacitance and the dielectric constant.