Eletric field and charges Questions

Given below are two statement: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): A point charge is brought in an electric field, the field at a nearby point will increase or decrease, depending on the nature of

A square surface of side L metre is in the plane of the paper. A uniform electric field E (V/m), also in the plane of the paper, is limited only to the lower half of the square surface, (see figure). The electric flux in SI units associated with the

A chare q is placed at the centre of the line joining two exactly equal positive charges Q. The system of three charges will be in equilibrium, if q is equal to

Four point charges , , and are located at the corners of a square ABCD of side 10cm. What is the force on a charge of placed at the centre of the square?

Two charges each of magnitude are placed at point and . Then the force between them is;

Two point charges of and are 20 cm apart from each other. Where will be the electric field zero on the line joining the charge from charge?

An insulated sphere of radius R has charge density . The electric field at a distance r from the centre of the sphere (r < R)

Two charges q and are placed fixed on x-axis separated by a distance 'd'. Where should a third charge be placed such that it will not experience any force?

A particle having charge q and mass m is projected with velocity in a uniform electric field . Change in momentum during any time interval t is given by?

An electric dipole is placed at an angle of with an electric field intensity . It experiences a torque equal to 4N-m. The charge on the dipole if the dipole length is 2cm is;

Two identical metal spheres charged with + 12µF and -8µF are kept at certain distance in air. They are brought into contact and then kept at the same distance. The ratio of the magnitudes of electrostatic forces between them before them and after con

An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it throu

⚠️ Diagram Detected: The AI detected a chemistry or physics diagram here. Please upload the image manually using the editor.A Point charge + Q is positioned at the center of the base of a square pyramid is shown. The flux through one of the four iden

A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is;

The intensity of the electric field at any point on the surface of a charged conductor is;

Given below are two statement: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): If a dipole is enclosed by a surface, then according to Gauss's law, electric flux linked with it will be zero. Reason (R): The ne

Given below are two statement: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): The surface charge densities of two spherical conductors of different radii are equal. Then, the electric field intensities near t

The quantisation of charge indicates that;

What is the dielectric constant of a metal?

The expression for torque '' experienced by an external uniform electric field '' is given by:

Electric charges are distributed in a small volume. The flux of the electric field through a spherical surface of radius 1 m surrounding the total charges is 100 V-m. The flux over the concentric sphere of radius 2 m will be;

The position of the charge inside the enclosing surface is changed in such a way that the total charge remains constant. Then the total normal electric flux through the enclosing surface:

An electric dipole placed in a uniform electric field experiences. in general;

The electric field intensity , due to an electric dipole of moment , at a point on the equatorial line is

⚠️ Diagram Detected: The AI detected a chemistry or physics diagram here. Please upload the image manually using the editor.Which of the following configurations of electric lines of force is not possible? (1) (2) -2C +5C -2C (3) -1C

The electric intensity due to an infinite cylinder of radius R and having charge q per unit length at a distance R)' display='false'> from its axis is

What is the flux linked through a cube of side 'l' if a charge 2q is placed at any one vertex of the cube?

One of the following is not a property of electric field lines

The electric field due to a point charge at a distance 6 m from it is 630 N/C. The magnitude of the charge is;

A sphere of radius R encloses a total charge q. If there is another concentric sphere of radius 2R and there be no additional charges between and . What is the ratio of electric flux through and ?

The distance between two point charges is increased by 10%. The force of interaction between them.

A point charge of is at the centre of cubical Gaussian surface 55cm on edge. What is the net electric flux through the surface?

A Gaussian sphere encloses an electric dipole within it. The total flux across the sphere is;

The electric dipole moment of an electron and a proton 4.3 nm apart is;

and represent gravitational and electrostatic force respectively between electrons situated at a distance .1 m. is of the order.

The electric field due to an electric dipole at a distance r from its centre in axial position is E. If the dipole is rotated through an angle of 90° about its perpendicular axis, the electric field at the same point will be;

Five electric dipoles are placed inside a shell. What will be the amount of electric flux associated with the shell?

Electric field intensity at a point in between two parallel sheets with like charges of same surface charge densities () is;

Two identical conducting balls A and B have positive charges and respectively but . The balls are brought together so that they touch each other and then kept in their original positions. The force between them is;

On charging a soap bubble its size:

What is the force between two small charged spheres having charges of and placed 30 cm apart in air?

⚠️ Diagram Detected: The AI detected a chemistry or physics diagram here. Please upload the image manually using the editor.ABC is an equilateral triangle. Charges +q are placed at each corner as shown in fig. The electric intensity at centre O will

What happens when a glass rod is rubbed with silk?

A surface has the area vector . The flux of an electric field through it if the field is

An electric dipole with dipole moment is aligned at with the direction of a uniform electric field of magnitude . Calculate the magnitude of the torque acting on the dipole.

A charge q is placed at the corner of a cube of side a. The electric flux through the cube is;

Given below are two statements: Statement-I: When two charged spheres are touched, then the total charge is not always shared equally. May be equally shared. Statement-II: Induced charge is always not equal to the inducing charge. In the light of the

Choose the correct answer. This is given by which law?

The acceleration of an electron due to the mutual attraction between the electron and a proton when they are apart is, (, ) (take, )

An electron having kinetic energy K is projected, between two charged plates, at an angle θ = 45° as shown in the figure. If electron is projected from the lower plate and electric field (E) between the plates is uniform then magnitude of the electri