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Recent questions and answers in Electrostatic Potential and Capacitance
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CBSE XII
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Physics
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Electrostatic Potential and Capacitance
The electric potential inside a conductivity sphere
cbse
class 12
physics
electrostatic-potential-and-capacitance
answered
May 22, 2019
by
ray73608
1
answer
Deduce the expression for capacitance of parallel plate capacitor with Dielectric slab. between the
cbse.class 12
physics
electrostatic potential and capacitance theory question
asked
Jun 9, 2017
by
pady_1
1
answer
How does capacitor stored energy ? derive an expression for the energy stored in a capacitor.&
cbse
class 12
physics
electrostatic potential and capacitance
answered
Jun 8, 2017
by
pady_1
1
answer
How does capacitor stored energy ? derive an expression for the energy stored in a capacitor.&
cbse
class 12
physics
electrostatic potential and capacitance
answered
Jun 8, 2017
by
pady_1
1
answer
Explain Van't Hoff Factor
cbse
class 12
physics
electrostatic potential and capacitance theory question
asked
Jun 8, 2017
by
pady_1
1
answer
Derive an expression for the equivalent capacitance of the parallel combination
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
Derive an expression for the equivalent capacitance of the parallel combination
cbse
class 12
physics
electrostatic potential and capacitance theory question
asked
Jun 7, 2017
by
pady_1
0
answers
Derive an expression for the equivalent capacitance of series combinations .
cbse
class 12
physics
electric potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
Derive an expression for the equivalent capacitance of series combinations .
cbse
class 12
physics
electric potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
What will be the capacitance of parallel plate capacitor .
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
What will be the capacitance of parallel plate capacitor .
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
What is the behavior of conductors in the electro static fields ?
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
What is the behavior of conductors in the electro static fields ?
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 7, 2017
by
pady_1
1
answer
Define Electric Flux
cbse
class 12
physics
electrostatic potential capacitance theory question
asked
Jun 7, 2017
by
pady_1
1
answer
Define Electric Flux
cbse
class 12
physics
electrostatic potential capacitance theory question
asked
Jun 7, 2017
by
pady_1
1
answer
What is electrostatic shielding mention its few applications ?
cbse
class 12
physics
electrostatic potential and capacitance theory question
asked
Jun 5, 2017
by
pady_1
1
answer
Show that the potential at a point on the equatorial line of an electric dipole is zero.
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 5, 2017
by
pady_1
1
answer
Show that the potential at a point on the equatorial line of an electric dipole is zero.
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 5, 2017
by
pady_1
1
answer
derive an expression for the potential at a point along the axial line of a short dipole .
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
Jun 5, 2017
by
pady_1
1
answer
What are non polar molecules ?
cbse
class 12
physics
electrostatic potential and capacitance
theory question
answered
Jun 2, 2017
by
pady_1
1
answer
What are polar molecules
cbse
class 12
physics
electrostatic potential and capacitance
theory question
asked
Jun 2, 2017
by
pady_1
1
answer
Define capacitance give its SI unit ?
cbse
class 12
physics
electrostatic potential and capacitance theory question
asked
May 31, 2017
by
pady_1
1
answer
What is the net electric field intensity in the interior of a conductor ?
cbse
class 12
physics
electrostatic potential and capacitance theory question
answered
May 31, 2017
by
pady_1
1
answer
A parallel plate capacitor is made of two dielectric blocks in series. One of the blocks has thickness $d_1$ and dielectric constant $k_1$ and the other has thickness $d_2$ and dielectric constant $k_2$ as shown in Fig. This arrangement can be thought as a dielectric slab of thickness $d (= d_1+d_2)$ and effective dielectric constant k. The k is
cbse
class12
physics
ch-2
sec-a
exemplar
medium
answered
Jan 3, 2017
by
meena.p
1
answer
In a region of constant potential
cbse
class12
physics
ch-2
sec-a
easy
answered
Jan 3, 2017
by
meena.p
1
answer
A parallel plate capacitor with air between the plates has a capacitance of $8\;pF$ . The separation between the plates is now reduced by half and the space between them is filled with a medium of dielectric constant 5. Calculate the value of capacitance of the capacitor in the second case .
cbse
class12
physics
ch-2
sec-b
additional
medium
answered
Jan 3, 2017
by
meena.p
1
answer
Figure shows two identical capacitors $C_1$ and $C_2$ , each of $2 \mu F$ capacitance , connected to a battery of $5\;V$ . initially switch 'S' is closed . After some times S is left open and dielectric slabs of dielectric constant $K=5$ are inserted to fill completely the space between the plates of the two capacitors . How will the charge and potential difference between the plates of the capacitors be affected after the slab are inserted ?
electrostatic-potential-and-capacitance
sec-b
answered
Jan 3, 2017
by
meena.p
1
answer
A test charge q is moved without a acceleration from A to C along the path from A to B and then from B to C in electric field E as shown in the figure . Calculate the potential difference between A and C
cbse
class12
physics
ch-2
sec-b
medium
answered
Jan 3, 2017
by
meena.p
1
answer
Equipotential surfaces
cbse
class12
physics
ch-2
sec-a
easy
answered
Jan 3, 2017
by
meena.p
1
answer
Consider a uniform electric field in the Z direction . The potential is a constant
cbse
class12
physics
ch-2
sec-a
easy
answered
Jan 3, 2017
by
meena.p
1
answer
Two charges $2\mu C$ and $-2 \mu C$ are placed at points A and B, 5cm apart . Depict an equipotential surface of the system
cbse
class12
physics
ch-2
sec-b
additional
medium
answered
Jan 3, 2017
by
meena.p
1
answer
An electrical technician requires a capacitance of $2 \mu F$ in a circuit across a potential difference of $1\; kV$. A large number of $1\; \mu F$ capacitors are available to him each of which can withstand a potential difference of not more than $400\; V$. Suggest a possible arrangement that requires the minimum number of capacitors.
cbse
class12
physics
ch-2
sec-c
additional
difficult
answered
Jan 3, 2017
by
meena.p
1
answer
Three capacitors of capacitances $2pF, 3pF$ and $4pF$ are connected in parallel. Determine the charge on each capacitor if the combination is connected to a $100\; V$ supply.
cbse
class12
physics
ch-2
sec-a
ncert
medium
answered
Jan 3, 2017
by
meena.p
1
answer
A spherical capacitor consists of two concentric spherical conductors, where outer and inner radii are $r_1$ and $r_2$ respectively as shown in the figure.The capacitance of the spherical capacitor is
cbse
class12
physics
ch-2
sec-c
additional
difficult
answered
Jan 3, 2017
by
meena.p
1
answer
Three capacitors each of capacitance $9 \;pF$ are connected in series. What is the potential difference across each capacitor if the combination is connected to a $120\; V$ supply?
cbse
class12
physics
ch-2
sec-a
ncert
medium
answered
Jan 3, 2017
by
meena.p
1
answer
A $900 \;pF$ capacitor is charged by $100\; V$ battery. How much electrostatic energy is stored by the capacitor?
cbse
class12
physics
ch-2
sec-a
ncert
easy
answered
Jan 3, 2017
by
meena.p
1
answer
A system consisting of two charges $7 \mu C$ and $–2 \mu C$ placed at $(–9 cm, 0, 0)$ and $(9 cm, 0, 0)$ respectively
cbse
class12
physics
ch-2
sec-b
ncert
medium
answered
Jan 3, 2017
by
meena.p
1
answer
Determine the electrostatic potential energy of a system consisting of two charges $7 \mu C$ and $–2 \mu C$ (and with no external field) placed at $(–9 cm, 0, 0)$ and $(9 cm, 0, 0)$ respectively.
cbse
class12
physics
ch-2
sec-a
ncert
easy
answered
Jan 3, 2017
by
meena.p
1
answer
Calculate the potential at a point P due to a charge of $4 × 10^{–7}\;C$ located $9\; cm$ away.
cbse
class12
physics
ch-2
sec-a
additional
easy
answered
Jan 3, 2017
by
meena.p
1
answer
If one of the two electrons of a $H_2$ molecule is removed, we get a hydrogen molecular ion$ find potential energy of system.
electrostatic-potential-and-capacitance
answered
Jan 3, 2017
by
meena.p
1
answer
Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatter portions.
cbse
class12
physics
ch-2
sec-c
additional
medium
answered
Jan 3, 2017
by
meena.p
1
answer
In a hydrogen atom, the electron and proton are bound at a distance of about $0.53 \dot{A}$: What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained ?
cbse
class12
physics
ch-2
sec-c
additional
difficult
answered
Jan 2, 2017
by
meena.p
1
answer
In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 Å: Estimate the potential energy of the system in eV, taking the zero of the potential energy at infinite separation of the electron from proton.
cbse
class12
physics
ch-2
sec-b
additional
medium
answered
Jan 2, 2017
by
meena.p
1
answer
A spherical conducting shell of inner radius $r_1$ and outer radius $r_2$ has a charge Q. Is the electric field inside a cavity (with no charge) zero, even if the shell is not spherical, but has any irregular shape? Explain.
cbse
class12
physics
ch-2
sec-a
additional
easy
answered
Jan 2, 2017
by
meena.p
1
answer
Determine the electrostatic potential energy of a system consisting of two charges $7 \mu C$ and $–2 \mu C$ (and with no external field) placed at $(–9 cm, 0, 0)$ and $(9 cm, 0, 0)$ respectively.mple 2.5 (a) Determine the electrostatic potential energy of a system consisting of two charges 7 µC and –2 µC (and with no external field) placed at (–9 cm, 0, 0) and (9 cm, 0, 0) respectively.Suppose that the same system of charges is now placed in an external electric field $E = A (1/r^2); A = 9 \times 10^5 C m^{–2}$. What would the electrostatic energy of the configuration be?
cbse
class12
physics
ch-2
sec-b
ncert
medium
answered
Jan 2, 2017
by
meena.p
1
answer
Determine the electrostatic potential energy of a system consisting of two charges $7 \mu C$ and $–2\;\mu C$ (and with no external field) placed at $(–9 cm, 0, 0)$ and $(9 cm, 0, 0)$ respectively.
cbse
class12
physics
ch-2
sec-a
ncert
easy
answered
Jan 2, 2017
by
meena.p
1
answer
A $4 \mu F$ capacitor is charged by a $200\; V$ supply. It is then disconnected from the supply, and is connected to another uncharged $2 \mu F$ capacitor. How much electrostatic energy of the first capacitor is lost in the form of heat and electromagnetic radiation?
cbse
class12
physics
ch-2
sec-a
additional
medium
answered
Jan 2, 2017
by
meena.p
1
answer
A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of $2.5 \mu C$. The space between the concentric spheres is filled with a liquid of dielectric constant $32$. What is the potential of the inner sphere?
cbse
class12
physics
ch-2
sec-b
additional
medium
answered
Jan 2, 2017
by
meena.p
1
answer
A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of $2.5 \mu C$. The space between the concentric spheres is filled with a liquid of dielectric constant $32$. Determine the capacitance of the capacitor.
cbse
class12
physics
ch-2
sec-b
additional
medium
answered
Jan 2, 2017
by
meena.p
1
answer
A cylindrical capacitor has two co-axial cylinders of length $15\; cm$ and radii $1.5\; cm$ and $1.4\; cm$. The outer cylinder is earthed and the inner cylinder is given a charge of $3.5\; \mu C$. Determine the capacitance of the system and the potential of the inner cylinder. Neglect end effects (i.e., bending of field lines at the ends).
cbse
class12
physics
ch-2
sec-c
additional
difficult
answered
Jan 2, 2017
by
meena.p
1
answer
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