List of top Physics Questions on Capacitors and Capacitance asked in KEAM

Two air core capacitors of equal capacitance $C$ are connected in series. If one of them is filled with a dielectric substance of dielectric constant $k$, the effective capacitance becomes

An isolated capacitor of capacitance 100 \(\mu\)F is charged to 32 C. If 16 C of charge is discharged from it, then its capacitance value is

When filled with a dielectric, the capacitance C of a capacitor changes by 2C. Then the dielectric constant of the dielectric is

When a capacitor of $9\,pF$ is connected to a battery, the electrostatic energy stored in the capacitor is $18 \times 10^{-8}J$. The quantity of charge stored in the capacitor is:

The capacitance of a capacitor is C when there is air (or vacuum) between its plates. When a dielectric is completely inserted between the plates, the capacitance becomes 2C. Find the dielectric constant of the material.

In a circuit, the capacitance \( C \) is connected. The effective capacitance of the circuit can be reduced by

Two identical isolated capacitors A and B are charged so that each has a charge of 4C. If a charge of \(-2C\) is added to A and \(+2C\) to B, then the ratio of respective potentials is

Three capacitors each of capacitance \(12\,\mu F\), are connected in series. When this combination is connected to a battery of \(12\,V\), the charge drawn from the battery is

A capacitance of a parallel plate air capacitor is \(10\mu\text{F}\). Dielectric constant of the medium to be introduced in between its plates is to double its capacitance is

Find the total capacitance and total charge on the capacitors

The velocity acquired by a charged particle of mass \(m\) and charge \(Q\) accelerated from rest by a potential \(V\) is

A \(5\,\mu F\) capacitor is fully charged by a \(12\,V\) battery and then disconnected. If it is connected now in parallel to an uncharged capacitor, the voltage across it is \(3\,V\). Then the capacity of the uncharged capacitor is

The energy stored in a capacitor of capacitance C having a charge Q under a potential V is

The energy stored in a capacitor of capacitance C having a charge Q under a potential V is

The energy stored in a capacitor of capacitance C having a charge Q under a potential V is