Two identical parallel plate capacitor are placed in series and connected to a constant voltage source of $V_0\, volt$. If one of the capacitors is completely immersed in a liquid with dielectric constant $K$, the potential difference between the plates of the other capacitor will change to
$\left( {\frac{{K + 1}}{K}} \right){V_0}$
$\left( {\frac{K}{{K + 1}}} \right){V_0}$
$\left( {\frac{{K + 1}}{2K}} \right){V_0}$
$\left( {\frac{2K}{{K + 1}}} \right){V_0}$
A hollow metal sphere of radius $5\, cm$ is charged so that the potential on its surface is $10\, V$. The potential at the centre of the sphere is.....$V$
A negative charged particle is released from rest in a uniform electric field. The electric potential energy of charge
In an oscillating $LC$ circuit the maximum charge on the capacitor is $Q$. The charge on the capacitor when the energy is stored equally between the electric and magnetic fields is
The equivalent capacitance of the combinatio shown in Figure is
Two similar tiny balls of mass $m$, each carrying charge $q$ are hung from silk thread of length $l$ as shown in Fig. These are separated by a distance $x$ and angle $2 \theta \sim 10$. Then for equilibrium :-