COMBINATIONS OF CAPACITORS
Electrostatic Potentials and Capacitance

272278 The capacitor, whose capacitance is 6,6 and \(3 \mu \mathrm{~F}\) respectively are connected in series with 20 volt line. Find the charge on \(3 \mu \mathrm{~F}\).

1 \(30 \mu \mathrm{c}\)
2 \(60 \mu \mathrm{~F}\)
3 \(15 \mu \mathrm{~F}\)
4 \(90 \mu \mathrm{~F}\)
Electrostatic Potentials and Capacitance

272289 \(C_0\) is the capacitance of a parallel plate capacitor with air as a medium between the plates (as shown in Fig. 1). If half space between the plates is filled with a dielectric of relative permittivity \(\varepsilon_{\mathrm{r}}\) (as shown in Fig. 2), the new capacitance of the capacitor will be:

1 \(\frac{C_D}{2}\left(1+\varepsilon_T\right)\)
2 \(\mathrm{C}_0+\varepsilon_{\mathrm{r}}\)
3 \(\frac{\mathcal{C}_{\mathrm{n}} \varepsilon_{\mathrm{r}}}{2}\)
4 \(\mathrm{C}_0\left(1+\varepsilon_{\mathrm{r}}\right)\)
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Electrostatic Potentials and Capacitance

272278 The capacitor, whose capacitance is 6,6 and \(3 \mu \mathrm{~F}\) respectively are connected in series with 20 volt line. Find the charge on \(3 \mu \mathrm{~F}\).

1 \(30 \mu \mathrm{c}\)
2 \(60 \mu \mathrm{~F}\)
3 \(15 \mu \mathrm{~F}\)
4 \(90 \mu \mathrm{~F}\)
Electrostatic Potentials and Capacitance

272289 \(C_0\) is the capacitance of a parallel plate capacitor with air as a medium between the plates (as shown in Fig. 1). If half space between the plates is filled with a dielectric of relative permittivity \(\varepsilon_{\mathrm{r}}\) (as shown in Fig. 2), the new capacitance of the capacitor will be:

1 \(\frac{C_D}{2}\left(1+\varepsilon_T\right)\)
2 \(\mathrm{C}_0+\varepsilon_{\mathrm{r}}\)
3 \(\frac{\mathcal{C}_{\mathrm{n}} \varepsilon_{\mathrm{r}}}{2}\)
4 \(\mathrm{C}_0\left(1+\varepsilon_{\mathrm{r}}\right)\)