What will be the capacity of a parallel-plate capacitor when the half of parallel space between the plates is filled by a material of dielectric constant ${\varepsilon _r}$ ? Assume that the capacity of the capacitor in air is $C$
What will be the capacity of a parallel-plate capacitor when the half of parallel space between the plates is filled by a material of dielectric constant ${\varepsilon _r}$ ? Assume that the capacity of the capacitor in air is $C$
- A
$\frac{{2{\varepsilon _r}C}}{{1 + {\varepsilon _r}}}$
- B
$\frac{{C({\varepsilon _r} + 1)}}{2}$
- C
$\frac{{{\varepsilon _r}C}}{{1 + {\varepsilon _r}}}$
- D
${\varepsilon _r}C$
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