Physics-
General
Easy
Question
The diagram shows three infinitely long uniform line charges placed on the X, Y and Z axis. The work done in moving a unit positive charge from (1, 1, 1) to (0, 1, 1) is equal to
- None
The correct answer is:
Related Questions to study
physics-
A particle of mass 1 kg & charge 
is projected towards a non conducting fixed spherical shell having the same charge uniformly distributed on its surface. Find the minimum initial velocity of projection required if the particle just grazes the shell.
A particle of mass 1 kg & charge is projected towards a non conducting fixed spherical shell having the same charge uniformly distributed on its surface. Find the minimum initial velocity of projection required if the particle just grazes the shell.
physics-General
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A unit positive point charge of mass m is projected with a velocity V inside the tunnel as shown. The tunnel has been made inside a uniformly charged non conducting sphere. The minimum velocity with which the point charge should be projected such it can it reach the opposite end of the tunnel, is equal to
A unit positive point charge of mass m is projected with a velocity V inside the tunnel as shown. The tunnel has been made inside a uniformly charged non conducting sphere. The minimum velocity with which the point charge should be projected such it can it reach the opposite end of the tunnel, is equal to
physics-General
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Electric field given by the vector 
is present in the XY plane. A small ring carrying charge +Q, which can freely slide on a smooth non conducting rod, is projected along the rod from the point (0, L) such that it can reach the other end of the rod. What minimum velocity should be given to the ring? (Assume zero gravity)
Electric field given by the vector is present in the XY plane. A small ring carrying charge +Q, which can freely slide on a smooth non conducting rod, is projected along the rod from the point (0, L) such that it can reach the other end of the rod. What minimum velocity should be given to the ring? (Assume zero gravity)
physics-General
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The diagram shows a small bead of mass m carrying charge q. The bead can freely move on the smooth fixed ring placed on a smooth horizontal plane. In the same plane a charge +Q has also been fixed as shown. The potential a the point P due to +Q is V. The velocity with which the bead should projected from the point P so that it can complete a circle should be greater than
The diagram shows a small bead of mass m carrying charge q. The bead can freely move on the smooth fixed ring placed on a smooth horizontal plane. In the same plane a charge +Q has also been fixed as shown. The potential a the point P due to +Q is V. The velocity with which the bead should projected from the point P so that it can complete a circle should be greater than
physics-General
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In space of horizontal EF (E = (mg)/q) exist as shown in figure and a mass m attached at the end of a light rod. If mass m is released from the position shown in figure find the angular velocity of the rod when it passes through the bottom most position
In space of horizontal EF (E = (mg)/q) exist as shown in figure and a mass m attached at the end of a light rod. If mass m is released from the position shown in figure find the angular velocity of the rod when it passes through the bottom most position
physics-General
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A bullet of mass m and charge q is fired towards a solid uniformly charged sphere of radius R and total charge + q. If it strikes the surface of sphere with speed u, find the minimum speed u so that it can penetrate through the sphere. (Neglect all resistance forces or friction acting on bullet except electrostatic forces)
A bullet of mass m and charge q is fired towards a solid uniformly charged sphere of radius R and total charge + q. If it strikes the surface of sphere with speed u, find the minimum speed u so that it can penetrate through the sphere. (Neglect all resistance forces or friction acting on bullet except electrostatic forces)
physics-General
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An infinite number of concentric rings carry a charge Q each alternately positive and negative. Their radii are 1, 2, 4, 8...... meters in geometric progression as shown in the figure. The potential at the centre of the rings will be
An infinite number of concentric rings carry a charge Q each alternately positive and negative. Their radii are 1, 2, 4, 8...... meters in geometric progression as shown in the figure. The potential at the centre of the rings will be
physics-General
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If the electric potential of the inner metal sphere is 10 volt & that of the outer shell is 5 volt, then the potential at the centre will be :
If the electric potential of the inner metal sphere is 10 volt & that of the outer shell is 5 volt, then the potential at the centre will be :
physics-General
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Potential difference between centre & the surface of sphere of radius R and uniform volume charge densityr within it will be :
Potential difference between centre & the surface of sphere of radius R and uniform volume charge densityr within it will be :
physics-General
physics-
A small particle of mass m and charge –q is placed at point P and released. If R >> x, the particle will undergo oscillations along the axis of symmetry with an angular frequency that is equal to
A small particle of mass m and charge –q is placed at point P and released. If R >> x, the particle will undergo oscillations along the axis of symmetry with an angular frequency that is equal to
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The direction (q) of 
at point P due to uniformly charged finite rod will be
The direction (q) of at point P due to uniformly charged finite rod will be
physics-General
physics-
The charge per unit length of the four quadrant of the ring is 
respectively. The electric field at the centre is
The charge per unit length of the four quadrant of the ring is respectively. The electric field at the centre is
physics-General
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Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at its centre O, force on it will be:
Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at its centre O, force on it will be:
physics-General
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Four charges are arranged at the corners of a square ABCD, as shown. The force on a +ve charge kept at the centre of the square is
Four charges are arranged at the corners of a square ABCD, as shown. The force on a +ve charge kept at the centre of the square is
physics-General
chemistry-
All the boron trihalides except B may be prepared by direct reaction between the elements Boron trihalides consist of trigonal - planar BX3 molecules Unlike the halides of the other elements in the group they are monomeric in the gas, liquid and Sol. id states, BF3 and BCl3 are gases, BBr3 3Iis a volatile liquid and B is a Sol. Id Boron trihalides are Lewis acids because they form simple Lewis complexes with suitable bases, as in the reaction : 
However, boron chlorides, bromides and iodides are susceptible (sensitive) to protoly sis by mild proton sources such as water, alcohols and even amines; for example BCl3 undergoes rapid hydrolysis: 
It is supposed that the first step in the above reaction is the formation of the complex 
which then eliminates HCl and reacts further with water
Which of the following is the correct prediction about observed B–X bond length, in BX3 molecules ?
All the boron trihalides except B may be prepared by direct reaction between the elements Boron trihalides consist of trigonal - planar BX3 molecules Unlike the halides of the other elements in the group they are monomeric in the gas, liquid and Sol. id states, BF3 and BCl3 are gases, BBr3 3Iis a volatile liquid and B is a Sol. Id Boron trihalides are Lewis acids because they form simple Lewis complexes with suitable bases, as in the reaction : However, boron chlorides, bromides and iodides are susceptible (sensitive) to protoly sis by mild proton sources such as water, alcohols and even amines; for example BCl3 undergoes rapid hydrolysis: It is supposed that the first step in the above reaction is the formation of the complex which then eliminates HCl and reacts further with water
Which of the following is the correct prediction about observed B–X bond length, in BX3 molecules ?
chemistry-General
