List of top Physics Questions on electrostatic potential and capacitance asked in NEET (UG)

The electric potential at a point $(x. y, z)$ is given by $ V = - x^2 y - xz^2 + 4 $ The electric field at that point is
A thin conducting ring of radius R is given a charge + The electric field at the center O of the ring due to the charge on the part AKB of the ring is E. The electric field at the center due to the charge on the part ACDB of the ring is
The energy required to charge a parallel plate condenser of plate separation d and plate area of cross-section A such that the uniform electric field between the plates is E, is
A hollow cylinder has a charge $q$ coulomb within it. If $\phi$ is the electric flux in units of voltmeter associated with the curved surface $B$, the flux linked with the plane surface $A$ in units of voltmeter will be-
Two condensers, one of capacity \(C\) and the other capacity \(\frac{C}{2}\) are connected to a \(V\) -volt battery, as shown in the figure. 
Two condensers
The work done in charging fully both the condensers is

Charges \(+q\) and \(-q\) are placed at points \(A\) and \(B\) respectively which are a distance \(2L\) apart, \(C\) is the midpoint between \(A\) and \(B\). The work done in moving a charge \(+Q\) along the semicircle \(CRD\) is

An electric dipole of moment $\vec{p}$ is lying along a uniform electric field $\vec{E}$. The work done in rotating the dipole by 90$^{\circ}$ is :-
A parallel plate air capacitor is charged to a potential difference of V volts. After disconnecting the charging battery the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates:
A network of four capacitors of capacity equal to C1=C,C2=2C,C3=3C and C4=4C are connected to a battery as shown in the figure. The ratio of the charges on C2 an C4 is
A network of four capacitors of capacity equal to C1=C,C2=2C,C3=3C and C4=4C

Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is\(\bigg(\frac{q_3}{4\pi\in_0}\bigg)k\),where k is:

wo charges q1 and q2 are placed 30 cm apart
A bullet of mass 2 g is having a charge of 2 µC. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s?
The unit of permittivity of free space ε0 is
An electric dipole has the magnitude of its charge as $q$ and its dipole moment is $p$. It is placed in a uniform electric field $E$. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively

Three capacitors each of capacity 4µF are to be connected in such a way that the effective capacitance of 6µF. This can be done by

A capacitor of capacitance $ C_{1} $ is charged to a potential $V$ and then connected in parallel to an uncharged capacitor of capacitance $ C_{2} $ .The final potential difference across each capacitor will be
A dipole of dipole moment $ \overrightarrow{ p} $ is placed in uniform electric field $ \overrightarrow{ E}$ then torque acting on it is given by
Energy per unit volume for a capacitor having area A and separation d kept at potential difference V is given by

A capacitor is charged with a battery and energy stored is \(U\). After disconnecting battery another capacitor of same capacity is connected in parallel with it. Then energy stored in each capacitor is:

A charge Q is situated at the corner of a cube, the electric flux passed through all the six faces of the cube is
Electric field at centre O of semicircle of radius a having linear charge density $\lambda$ given as
What is the effective capacitance between points X and y?
When air is replaced by a dielectric medium of constant K, the maximum force of attraction between two charges separated by a distance
A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to
The energy stored in a capacitor of capacity C and potential V is given by
A point charge + q is placed at the centre of a cube of side $l$. The electric flux emerging from the cube is