Three identical capacitors C1,C2 and C3 have a capacitance of 1μF each, and they are uncharged initially. Then they are connected in a circuit as shown in the figure and C1 is filled completely with a dielectric material of relative permittivity εr. The cell's electromotive force (emf) is V0=8 V. First the switch S1 is closed while the switch S2 is kept open. When the capacitor C3 is fully charged, S1 is opened and S2 is closed simultaneously.When all the capacitors reach equilibrium state (steady condition), the charge on C3 is found to be 5 μC. The value of εr is (Upto one decimal places)

Three identical capacitors C1,C2 and C3 have a capacitance of 1μF eac

1.	Three identical capacitors C1,C2 and C3 have a capacitance of 1μF each, and they are uncharged initially. Then they are connected in a circuit as shown in the figure and C1 is filled completely with a dielectric material of relative permittivity εr. The cell's electromotive force (emf) is V0=8 V. First the switch S1 is closed while the switch S2 is kept open. When the capacitor C3 is fully charged, S1 is opened and S2 is closed simultaneously.When all the capacitors reach equilibrium state (steady condition), the charge on C3 is found to be 5 μC. The value of εr is (Upto one decimal places)
Answer» Three identical capacitors $C_{1}, C_{2}$ and $C_{3}$ have a capacitance of $1 μ F$ each, and they are uncharged initially. Then they are connected in a circuit as shown in the figure and $C_{1}$ is filled completely with a dielectric material of relative permittivity $ε_{r}$ . The cell's electromotive force (emf) is $V_{0} = 8 V$ . First the switch $S_{1}$ is closed while the switch $S_{2}$ is kept open. When the capacitor $C_{3}$ is fully charged, $S_{1}$ is opened and $S_{2}$ is closed simultaneously. When all the capacitors reach equilibrium state (steady condition), the charge on $C_{3}$ is found to be $5 μ C$ . The value of $ε_{r}$ is (Upto one decimal places)

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