State, in terms of $V$ and $C$, the initial charge $Q_A$ on the plates of capacitor A.
State, in terms of $V$ and $C$, the initial energy $E_A$ stored in capacitor A.
State and explain what happens to the charge that was initially on the plates of capacitor A.
Show that the final potential difference (p.d.) $V_B$ across capacitor B is given by $V_B = \frac{V}{4}$. Give your reasoning.
Determine an expression, in terms of $V$ and $C$, for the decrease $\Delta E$ in the total energy stored in the capacitors when the switch is changed over.
Show that the final potential difference (p.d.) $V_B$ across capacitor B is given by $V_B = \frac{V}{4}$. Give your reasoning.
Determine an expression, in terms of $V$ and $C$, for the decrease $\Delta E$ in the total energy stored in the capacitors as a result of the switch moving.