In a medium of dielectric constant $K$, the electric field is $\vec E$ . If ${ \varepsilon _0}$ is permittivity of the free space, the electric displacement vector is
AIIMS 2014, Medium
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Electric displacement vector, $\vec D\, = \,\,\varepsilon \vec E$
As, $\varepsilon \, = \,\,{\varepsilon _0}K$
$\therefore \,\,\vec D\, = \,{\varepsilon _0}K\vec E$
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