A) decreased, by a factor of\[\frac{1}{\sqrt{2}}\]
B) increased, by a factor of \[\sqrt{2}\]
C) increased, by a factor of\[\frac{1}{2}\]
D) decreased, by a factor of 2
Correct Answer: D
Solution :
When a dielectric material is inserted between the plates of a capacitor (keeping the charge to be constant) or capacitor is immersed in dielectric medium, the electric field decreases by a factor k (the dielectric constant of the dielectric) \[\therefore \] \[E=\frac{{{E}_{0}}}{k}\] Given, \[k=2\] Hence, \[E=\frac{{{E}_{0}}}{2}\] Thus, electric field between the plates is decreased by a factor of 2.
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