Two identical condensers are joined as shown in the figure. When the switch $\mathrm{S}$ is closed, the…
Two identical condensers are joined as shown in the figure. When the switch $\mathrm{S}$ is closed, the total energy of the system is $\mathrm{U}_1$. If the switch is opened and both the condensers are filled with a dielectric of dielectric constant 3 , then the energy of the system becomes $\mathrm{U}_2$. The value of $\frac{\mathrm{U}_1}{\mathrm{U}_2}$ is
