Question

The relative permittivity of a dielectric is 2.25

A) what is its permittivity?

B) what will be the capacitance if this inserted into a 7.8 uF air capacitor

Answer 1

$\varepsilon_m=\varepsilon_r\varepsilon_0=19.9\cdot 10^{-12}~\frac Fm,$

$C'=\frac{C}{\varepsilon_r}=3.5~\mu F.$