NEET Physics Electrostatic Potential And Capacitance Parallel Plate Capacitor MCQs

Two identical parallel plate capacitors, each with capacitance $C$, are charged to potentials $V_1$ and $V_2$ respectively. They are then connected in parallel with plates of like polarity joined. After the connection, a dielectric slab of dielectric constant $K$ is inserted into one of the capacitors filling the entire space. The final potential difference across the combination is:

A parallel plate capacitor is charged and then disconnected from the battery. If the plates are pulled apart to double the initial separation, which of the following quantities will quadruple?

A parallel plate capacitor with plate separation $d$ and area $A$ is filled with two dielectrics of dielectric constants $K_1$ and $K_2$, each occupying half the volume as shown. The equivalent capacitance is:

A parallel plate capacitor with air between the plates has a capacitance $C$. A dielectric slab of dielectric constant $K$ and thickness $t < d$ is inserted between the plates. The new capacitance is:

A parallel plate capacitor is being charged by a constant current $I$. The area of the plates is $A$ and the separation is $d$. The displacement current density between the plates is:

A parallel plate capacitor has capacitance $C$. If the distance between the plates is doubled and the area of the plates is halved, the new capacitance will be:

Two identical parallel plate capacitors are connected in series. The combination is then connected to a battery. If one of the capacitors is filled with a dielectric material of dielectric constant $k$, how does the total capacitance change?

A parallel plate capacitor with air between the plates has a capacitance of $10 pF$. A dielectric slab of dielectric constant 2 is completely filled between the plates. What is the new capacitance?

The energy stored in a parallel plate capacitor with capacitance $C$ and voltage $V$ is $U$. If the voltage is doubled, the new energy stored will be:

A parallel plate capacitor is charged and then disconnected from the battery. If a dielectric slab is then inserted between the plates, which quantity remains constant?