Physics-
General
Easy
Question
Four charges are placed on corners of a square as shown in figure having side of 
. If Q is one microcoulomb, then electric field intensity at centre will be
upwards
downwards
- upwards
- downwards
upwards
downwards
upwards
downwards
The correct answer is: upwards
Side a = 5 ´ 10–2 m
Half of the diagonal of the square 
Electric field at centre due to charge q 
Now field at O 
(upward)
Related Questions to study
Physics-
A cube of side b has a charge q at each of its vertices. The electric field due to this charge distribution at the centre of this cube will be
A cube of side b has a charge q at each of its vertices. The electric field due to this charge distribution at the centre of this cube will be
Physics-General
Physics-
The figure shows some of the electric field lines corresponding to an electric field. The figure suggests
The figure shows some of the electric field lines corresponding to an electric field. The figure suggests
Physics-General
Physics-
Equal charges are given to two spheres of different radii. The potential will
Equal charges are given to two spheres of different radii. The potential will
Physics-General
Physics-
In the figure the charge Q is at the centre of the circle. Work done is maximum when another charge is taken from point P to
In the figure the charge Q is at the centre of the circle. Work done is maximum when another charge is taken from point P to
Physics-General
Physics-
Two charge +q and -q are situated at a certain distance. At the point exactly midway between them
Two charge +q and -q are situated at a certain distance. At the point exactly midway between them
Physics-General
Physics-
A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as
A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as
Physics-General
Physics-
Below figures (1) and (2) represent lines of force. Which is correct statement
Below figures (1) and (2) represent lines of force. Which is correct statement
Physics-General
Physics-
Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electrostatic field 
, the electric field within the plate
Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electrostatic field , the electric field within the plate
Physics-General
Physics-
An uncharged sphere of metal is placed in between two charged plates as shown. The lines of force look like
An uncharged sphere of metal is placed in between two charged plates as shown. The lines of force look like
Physics-General
Physics-
If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to
If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to
Physics-General
Physics-
In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done
In the electric field of a point charge q, a certain charge is carried from point A to B, C, D and E. Then the work done
Physics-General
Physics-
ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be
ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be
Physics-General
Physics-
Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are 
and 
respectively and if the displacement between A and B is r then
Figure shows the electric lines of force emerging from a charged body. If the electric field at A and B are and respectively and if the displacement between A and B is r then
Physics-General
Physics-
The electric field inside a spherical shell of uniform surface charge density is
The electric field inside a spherical shell of uniform surface charge density is
Physics-General
Physics-
The ratio of electrostatic and gravitational forces acting between electron and proton separated by a distance 
will be (Charge on electron = 1.6 ´ 10–19 C, mass of electron = 9.1 ´ 10–31 kg, mass of proton = 
The ratio of electrostatic and gravitational forces acting between electron and proton separated by a distance will be (Charge on electron = 1.6 ´ 10–19 C, mass of electron = 9.1 ´ 10–31 kg, mass of proton =
Physics-General
