When electron is brought near a - vely charged plate then its electrical P.E.

A metallic ball having charge 10^-8C moves from a point A at potential 600V to a point B at zero potential. Which of the following is the change in its K.E.

A Particle carrying a charge of 2e falls through a potential difference of 3V. The energy acquired by it will be:

Relative permittivity for air is:

If 2?F and 4?F capacitors are connected in series, the resultant capacitance is

Due to polarization, electric field E

The product of resistance and capacitance is called

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. Which of the following quantity remain unchanged?

A capacitor is charged to store energy U. the charging battery is disconnected. An identical capacitor is now connected in parallel to the first capacitor. The energy in each capacitor is

If a charged body is moved against the electric field, it will gain:

Which one of the following can be taken as measure of electric field intensity:

Two charges q₁ and q₂ are placed in vacuum at distance d and force between them is F. If a mentioned of relative permittivity 4 is introduced between them then new force will be:

For computation of electric flux, the surface area should be

4 x 10²⁰ eV energy is required to move a charge of 0.25 C from A to B the potential difference between A and B is

Time constant is defined as the time during which a capacitor charges to_____ of its equilibrium value.

A 1?F capacitor is subjected to 4000V potential difference the energy stored in capacitor is:

A charged conductor has charge on its:

An ECG records the_______between points on human skin generated by electric process in the heart:

The electric field lines are closer where the field is:

Which material sheet should be placed between the plates of a parallel plate capacitor in order to increase its capacitance?

Two charges 1 ?c and 5?c separated by 20cm, the ratio of electrical forces acting on them will be:

The number of electrons in one coulomb charge is equal to:

Photocopier and inkjet printer are the application of:

Two equal and opposite equal charges separated by small distance are said to make a :

If time constant in RC circuit is small, the capacitor is charged or discharged

Electron volt is the unit of

Capacitance of parallel plate capacitor is:

If the separation between the plates of a capacitor is doubled then its capacitance become

The unit of Electric intensity other than NC^-1 is:

The number of electrons in one coulomb charge is equal to

If potential difference across two plates of a parallel plates capacitor is doubled then the energy stored in it will be

Three capacitor of 4?F each are to be connected in such a way that the net capacitance is 6?F. Then

Two point charges are +2C and +6C repel each other with a force of 12N. If a charge of -4C is given to each of these charges, the force now is

Which of the following is the dielectric constant of metals?

If 2?F and 4?F capacitors are connected in parallel, the resultant capacitance is

Charge on electron is:

When 10¹⁴ electron are removed from a neutral metal sphere then which of the following is the charge on sphere?

The electric field created by positive charge is:

The Electrostatic force between two charges is 42 N. If we place a dielectric of er.=2.1 between the charges, then the force become equal to:

One electron volt is equal to

Dielectric constant ?_r can be defined as

The constant of proportionality "K" depend upon:

Which one of the following relations for the energy stored in capacitor is not correct?

Charge on an electron is:

Photocopier and inkjet printer are the application of:

The electrostatic force of repulsion between two electrons at a distance 1m is:

SI unit of electric flux is:

Electric field and electric potential inside hollow charged conducting sphere are respectively.

Due to polarization of the dielectric, the electric intensity between the plates of a capacitor:

If a metal plate is placed between two point charges then electrostatic force between them.

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid-way between them is:

The capacitance of a capacitor can be increased by

Doubling the distance between the plates of a capacitor, the capacitance:

The product of resistance and capacitance is

The work done in bringing a unit positive charge from infinity to that point in an electric field is called:

SI unit of permittivity of free space are:

If the potential difference across the two plates of a parallel plate capacitor is double then its energy stored in it will be:

When dielectric is placed between the plates of capacitor, The value of E between the plates

The electric flux through closed surface depends upon.

The relation "-?V/?r" represents

Selenium is a:

If the medium between plates of a capacitor be air or vacuum, then the capacitance of capacitor is:

One Joule is equal to

Capacitance of a Capacitor in Vacuum is given by

The force between two point charges separated by air is 4 N. When separated by a medium of relative permittivity 2, the force between them becomes;

When air is replaced by a dielectric medium of relative permittivity ?r, the maximum capacity of the condenser_____

A parallel plate capacitor with oil between the plate(?_r = 2) has a capacitance "C". If oil is removed then capacitance of capacitor becomes.

A charge Q is enclosed in a dielectric of strength K the maximum number of electric lines of force are

The product of resistance and capacitance is equal to

Two copper spheres of same radii one hollow and other solid are charged to the same potential then.

In a charged capacitor, the energy resides in:

The value of ?_o permittivity for free space is:

The product of resistance and capacitance is

If a charged capacitor is connected to earth its charge.

The energy stored in the capacitor is:

An alpha particle is accelerated through potential difference of 10⁶V.Which of the following is its K.E?

If f₁ and ₂ are forces acting on ?-particle and electron respectively, when

If a dielectric is placed between the plates of a capacitor, its capacitance

Due to polarization of the dielectric, the capacitance of the capacitor:

If an insulating material called dielectric is introduced between the plates, the capacitance of capacitor is:

The value of Coulomb's constant (K) in SI units is

Selenium is:

The concept of electric field theory was introduced by

The toner of the printer is given

Electric intensity inside the hollow sphere is:

Special organ called Ampullae of lorenzini that are very sensitive to electric field are found in

The energy stored in a charged capacitor is given by:

Selenium is a:

Capacitance of a capacitor does not depend upon:

For computation of electric flux, the surface area should be

A charge Q is divided into two parts q₁ and q₂. The maximum coulomb repulsion between the two parts is obtained when ratio q₁/q₂ is.

1 ohm x 1 farad is equal to

The magnitude of an electric field E, such that an electron placed in it would be experience an electric force equal to its weight, is given by

The electron volt is the unit of

Which of the following is not the energy stored between the plates of a condenser?

The force between two similar unit charges placed one meter apart in air is: