Call me

Have a Query? We will call you right away.

+91

E.g: 9876543210, 01112345678

We will give you a call shortly, Thank You

Office hours: 9:00 am to 9:00 pm IST (7 days a week)

What are you looking for?

Syllabus

how does the angle of dip vary from equator to poles?

if a dielectric slab of dielectric constant K is introduced between the plates of a parallel plate capacitor completely , how does the energy density of the capacitor change?

What are the properties of

?Electric Lines of Forcethe answer is 2.0

ans me as fast as possible

What is Ohm's law in vector form.........???

derive an expression for the total work done in rotating an electric dipole through an angle theta in a uniform electric field.

electric succeptibility

or

electric permittivity

pls explain?

Two capacitors C1 and C2 are charged to potential V1 and V2 resp. and then connected in parallel. Calculate common potential, charge on each capacitor and energy in the system after connection??

(1) 10$\sqrt{5}$ V/m

(2) 10$\sqrt{3}$ V/m

(3) 20 V/m

(4) 10 V/m

Find the expression for the capacitance of a parallel plate capacitor of area A and plate separation d if

i) a dielectric slab of thickness t, and

ii) a metllic slab of thicknes t

(where t<d) are introduced one by one between the platesof the capacitor. In which case would the capacitance be more and why?

An electic dipole of length 2cm is placed with its axis making an angle 60 degree with respect to a uniform electric field of 10

^{5}N/C. If it experiences a torque of 13.856 Nm, calculate the- magnitude of the charge on the dipole & PE of the dipole.A potential difference of 1200 V is established between two parallel plates of a capacitor. The plates of the capacitor are at a distance of 2cm apart. An electron is released from the negative plate at the same instant a proton is released from the positive end. How does the following:

a) velocity

b) Energy compare when they strike the opposite plates.

c) How far from the positive plate will the pass each other?

ANS: a) 42.84, b) equal, c)2.7cm

Charge q is uniformly distributed over a thin half ring of radius R .The electric field at the centre of the ring is?WHAT ARE THE PROPERTIES OF EQUIPOTENTIAL SURFACES ?????????

2. Electric field at point P is given by $\mathrm{E}={\mathrm{rE}}_{0}.$The total flux through the given cylinder of radius R and height h is

$a.{E}_{0}\pi {R}^{2}h\phantom{\rule{0ex}{0ex}}b.2{E}_{0}\pi {R}^{2}h\phantom{\rule{0ex}{0ex}}c.3{E}_{0}\pi {R}^{2}h\phantom{\rule{0ex}{0ex}}d.4{E}_{0}\pi {R}^{2}h$

A parallel plate capacitor is charged by a battery. After sometime the battery is disconnected and a dielectric slab of dielectric constant K is inserted in between the plates. How would i) The capacitance ii) The electric field between the plates and iii) The energy stored in the capacitor be affected? Give reasons with necessary equations.

How much work is done in moving a 500 micro coulomb charge between two points on an equipotential surface?

_{1 },q_{2,}q_{3}are in line at equal distances q_{2 }and q_{3}are in sign .Find the magnitude and sign of q_{1 },if the net force on q_{3}is zero.Sr.NoCapacitorArea of platesSeparationbetween the plates

Medium betweenthe plates

1PADMedium of Er ---42Q2AD/2air3R2ADMedium ofEx =2ChargeQ is distributed over two concentric hollow spheres of radii R1 and R2 (R2>R1) such that the surface charge densities areequal. Find the electric potential at the common centre.

Q. The following graph shows the variation of charge Q with voltage V for two capacitors K and L. In

which capacitor is more electrostatic energy stored?

An electric dipole is held in a uniform electric field.

a) Show that the net force acting on it is zero.

b) The dipole is aligned parallel to the field.Find the work done in rotating through angle of 180 degree

What is the ratio of electric field intensities at any 2 points between the plates of a parallel plate capacitors?

A spherical conducting shell of inner radius r1 and outer radius r2 has a charge Q. A charge q is placed at the centre of the cell.

(a) What is the surface charge density on the (i) inner surface (ii) outer surface of the shell.

(b) Write the expression for electric field at a point x r2 from the centre of the shell.

(1) Equally spaced

(2) Unequally spaced, separation increasing as one goes away from q.

(3) Unequally spaced, separation decreasing as one goes away from q.

(4) Unequally spaced, separation first increasing and then decreasing.

Calculate the amount of work done in rotating a dipole, of dipole moment 3 x 10

^{-8}Cm, from its position of stable equilibrium to the position of unstable equilibrium of uniform electric field 10^{4}N/C..Q1.)CALCULATE THE WORK DONE TO DISSOSIATE THE SYSTEM OF THREE CHARGES PLACED ON THE VERTICES OF THE TRIANGLE ABC

HERE q=1.6 * 10

^{-10 }Call side of 10cm ,A=q ,B=2q,C=-4q

Two point charges 2uC and -2uC are placed at points A and B 6 cm apart .

(1) Draw the equipotential surfaces of the system.

(2) Why do equipotential surface get closer to each other near the point charges?

Draw 3 equipotential surfaces corresponding to a field that uniformly increases in magnitude but remains constant along z direction.

how are these surfaces different from that of a constant electric field along z direction?

Two point charges 4 micro coulomb & -2 micro coulomb are seperated by a distance of 1m in air. At what point of line joining the charges is the electric potential zero?

4. Consider the given circuit. Initially all capacitor were uncharged. In steady state if V

_{A}- V_{B}â€‹ =3 V, potential difference across the terminals of battery is .(a) 18 V (b) 9 V

(c) 27 V (d) None of these

two concentric metallic spherical shells of radii R and 2R are given charges Q1 and Q2 respectively .the surface charge densities on the outer surfaces of the shells are equal .determine the ratio Q1:Q2

Draw an equipotential surface for a system, consisting of two charges Q, -Q separated by a distance ‘r’ in air.

Derive an expression for the energy stored in parallel plate capacitor with air as the medium between its plates . Air is now re placed by dielectric medium of dielectric constants k. How does it charges the total energy of the capacitor if

a ) the capacitor remains connected to the same battery .

b ) the capacitor is disconnected from the battery.

Three identical capacitors C

_{1}, C_{2}and C_{3}of capacitance 6 μF each are connected to a 12 V battery as shown.Find

(i) charge on each capacitor

(ii) equivalent capacitance of the network

(iii) energy stored in the network of capacitors

Derivation of electric potential energy of a system of two point charges in the absence of external electric field

lenz law is consequence of the law of conservation of

charge,momentum, mass or energy

plz answer me xperts

A 600 pF capacitor is charged by a 200V supply. It is then disconnected from the supply and is connected

to another uncharged 600 pF capacitor. How much electrostatic energy is lost in the process. ?

Two capacitors, of capacitance 3 micro farad and 6 micro farad are charged to potentials of 2V and 5V respectively. These two charged capacitors are connected in parallel . Find the charge across each of the two capacitors now.

explain the working of VAN DE GRAFF GENERATOR?

Define dielectric constant in term of capacitance

Two point charges of +3x10

^{-8}C and -2x10^{-8}C are located 15 cm apart in air. Find at what point on the line joining these charges the electric potential is zero. Take potential at infinity to be zero.A 4 micro farad capacitor charged by 200 volt supply. It is then dissconnected from the supply and is connected to anothe uncharged 2 micro farad capacitor. How much electrostatic energy of first capacitor is lost in the form of heat or e. m radiations?

A. 2√(mgd+qE/m)

B. √((qE/md-g)l)

C. √((qE/md+g)l)

d. √(2(mgd-qE/m ))

derivation for energy stored in a capacitor?

a)volt c)newton/coulomb

b)joule/coulomb d)newton-metre/coulomb

a non conducting ring of radius 0.5 m carries a total charge of 1.11*10

^{-10}C distributed non uniformly on it's circumference producing electric field E vector everywhere in the space . the value of the line integral ∫ -E. dl ( llower limit =infinity , upper limit = 0) (=0 being at the centre of the ring ) in volts isName the physical quantity whose SI unit is Newton Coulomb

^{-1}.show that there is always a loss of energy when two capacitors charged to different potentials share charge

the circuit is in series with a at one end and the capacitors connecetd in series

What is nature of symmetry of a dipole field?

why is electrostatic potential constant throughout the volume of the conductor and has the same value(as inside) on its surface??

Q21. A conducting sphere of radius R and charge Q is placed near a uniformly charged nonconducting infinitely large thin plate having surface charge density $\mathrm{\sigma}$. Then find the potential at point A (on the surface of sphere) due to charge on sphere ( here K= $\frac{1}{4\mathrm{\pi}{\in}_{0}},{\mathrm{\theta}}_{0}=\frac{\mathrm{\pi}}{3}$)

(A) $\mathrm{K}\frac{\mathrm{Q}}{\mathrm{R}}-\frac{\mathrm{\sigma}}{4{\in}_{0}}\mathrm{R}$ (B) $\mathrm{K}\frac{\mathrm{Q}}{\mathrm{R}}-\frac{\mathrm{\sigma R}}{{\in}_{0}}$

(C) K $\frac{\mathrm{Q}}{\mathrm{R}}$ (D) none of these

Draw an equipotential surface in a uniform electric field...

Electric potential in an electric field is given by v=K/r ( K=const). If the posiion vector r = 2i + 3j + 6k, the electric field is given by

A) ( 2i + 3j + 6k) / 243

B) (2i + 3j + 6k) / 343

C) (3i + 2j + 6k) / 243

D) (6i + 2j + 6k) 343

Plz do all the proper.

A 10 micro faran capacitor is charged by a 30V dc supply & then connected across an uncharged capacitor of 50 micro faran. Calculate the(1) final potential difference across the combination & the (2)initial & final energies. How will you account for the difference in energies?

derivation of electric potential at a point on axial line of an electric dipole

i) positive ii) negative?

two circular metal plates each of radius 10 cm are kept parallel to each other at a distance of 1 mm. what kind of capacitor do they make? mention one application of this capacitor. if the radius of each of the plates is increased by a factor of 2

^{1/2}and their distance of separation is decreased to half of its initialvalue, calculate the ratio of capacitance in the two cases.Two electrons are moving towards each other,each with a velocity of 10

^{6}m/s.What will be losest distance of approach between them?dbetween then. K_{1}, K_{2}and K_{3}are the dielectric constants of the three materials in between the plates as in the figure.2 identical parallel plate capacitors connected to a battery with the switch 's' closed . the switch 's' is now open and the free space between the plate of the capacitor is filled with a dielectric of k=3. Find the ratio of total energy stored in both capacitors before and after the introduction of the dielectric

draw schematically an equipotential surface of a uniform electrostatic field along x-axis.

answer soon pls

(a) V' - V/V' +V

(b) V' - V/V

(c) V' - V/ V'

(d) V - V'/V'

Are there any drawbacks of Van de Graff? If yes, what are they???

The half â€“life of a radioactive substance is 30 s. Calculate:(i ) the decay constant, and(ii) Time taken by the sample to decay 3/4 of its initial value.