Physics-
General
Easy
Question
A charge ' q ' is placed in a mug as shown in the figure. The radius of the circular face is ' r ' and distance between the centre of the circular face and charge is ' r '. Flux through the circular face is
The correct answer is:
Related Questions to study
physics-
A ring of radius 
carries a non-uniform charge of linear density 
(see in the figure) Magnitude of the net dipolement of the ring is:
A ring of radius carries a non-uniform charge of linear density (see in the figure) Magnitude of the net dipolement of the ring is:
physics-General
physics-
An infinite nonconducting sheet at x=0 carries a uniform surface charge density 
. A thin rod of length 2 L has a uniform linear charge density 
on one half and 
on the other half. The rod is hinged at its mid point C at x=2 L and lies in the XOZ plane making an angle 
with the positive X-axis as shown in figure. The torque 
experienced by the rod is 
. The value of k is
An infinite nonconducting sheet at x=0 carries a uniform surface charge density . A thin rod of length 2 L has a uniform linear charge density on one half and on the other half. The rod is hinged at its mid point C at x=2 L and lies in the XOZ plane making an angle with the positive X-axis as shown in figure. The torque experienced by the rod is . The value of k is
physics-General
physics-
A system of two electric dipoles, each of dipole moment having magnitude P are arranged in the configuration shown in figure. The electrostatic interaction energy of this system of two dipoles is :
A system of two electric dipoles, each of dipole moment having magnitude P are arranged in the configuration shown in figure. The electrostatic interaction energy of this system of two dipoles is :
physics-General
physics-
An electric dipole consists of charges 
separated by a distance of 
. It is placed near a long line charge of linear charge density 
as shown in figure, such that the negative charge is at a distance of 2.0 cm from the line charge. Find the force acting on the dipole
An electric dipole consists of charges separated by a distance of . It is placed near a long line charge of linear charge density as shown in figure, such that the negative charge is at a distance of 2.0 cm from the line charge. Find the force acting on the dipole
physics-General
physics-
In which of the following cases, force acting on the dipole could be zero
In which of the following cases, force acting on the dipole could be zero
physics-General
physics-
Consider the dipole 
kept in a space of electric field a shown. The dipole will move
Consider the dipole kept in a space of electric field a shown. The dipole will move
physics-General
physics-
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of 
and the distance 
from the common centre of the two shells for r>d.
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of and the distance from the common centre of the two shells for r>d.
physics-General
physics-
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of q and the distance r from the common centre of the two shells for
i) b<r<c
ii) c<r<d
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of q and the distance r from the common centre of the two shells for
i) b<r<c
ii) c<r<d
physics-General
physics-
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of q and the distance r from the common centre of the two shells for
i) r<a
ii) a<r<b
A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radius d The inner shell has total charge +2q, and the outer shell has charge +4q.
Find the electric field in terms of q and the distance r from the common centre of the two shells for
i) r<a
ii) a<r<b
physics-General
physics-
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
Potential of the sphere will be
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
Potential of the sphere will be
physics-General
physics-
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
reading of ammeter at this instant
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
reading of ammeter at this instant
physics-General
physics-
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
Net charge on surface of conductor at this instant
If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)
Net charge on surface of conductor at this instant
physics-General
physics-
A solid metal sphere of radius has a charge +2Q. A hollow spherical shell of radius 3R placed concentric with the first sphere has net charge -Q. find calculate the potential difference between the spheres.
A solid metal sphere of radius has a charge +2Q. A hollow spherical shell of radius 3R placed concentric with the first sphere has net charge -Q. find calculate the potential difference between the spheres.
physics-General
physics-
In uniform electric filed 
as shown in figure, find
a) 
b) 
In uniform electric filed as shown in figure, find
a)
b)
physics-General
physics-
A uniform electric field of 100 V/m is directed at 30° with the positive 
-axis as shown in figure. Find the potential difference 
if OA=2 m and OB=4 m.
A uniform electric field of 100 V/m is directed at 30° with the positive -axis as shown in figure. Find the potential difference if OA=2 m and OB=4 m.
physics-General
