JEE-ADVANCED SERIES Physics
Electric Charges And Fields
16 previous year questions.
Volume: 16 Ques
Yield: Medium
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1983 Chapter Questions 16 MCQs
01
PYQ 1983
medium
physics ID: jee-adva
A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at the centre of the sphere is.
1
zero
2
10 V
3
same as at a point 5 cm away from the surface
4
same as at a point 25 cm away from the surface
02
PYQ 1983
hard
physics ID: jee-adva
A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a change of - 3Q, the new potential difference between the same two surfaces is
1
V
2
2V
3
4V
4
-2V
03
PYQ 1996
medium
physics ID: jee-adva
A metallic solid sphere is placed in a uniform electric field. Which path, the lines of force follow as shown in figure?
1
1
2
2
3
3
4
4
04
PYQ 1998
easy
physics ID: jee-adva
Two particles, each of mass m and charge q, are attached to the two ends of a light rigid rod of length 2R. The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is
1
q/2m
2
q/m
3
2q/m
4
05
PYQ 1999
hard
physics ID: jee-adva
An elliptical cavity is carved within a perfect conductor. A positive charge q is placed at the centre of the cavity. The points A and B are on the cavity surface as shown in the figure.then
1
electric field near A in the cavity = electric field near B in the cavity
2
charge density at A = charge density at B
3
potential at A = potential at B
4
total electric field flux through the surface of the cavity is
06
PYQ 2004
medium
physics ID: jee-adva
Consider the charge configuration and a spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface, the electric field will be due to.
1
2
only the positive charges
3
all the charges
4
and
07
PYQ 2007
easy
physics ID: jee-adva
Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then
1
negative and distributed uniformly over the surface of the sphere
2
negative and appears only at the point on the sphere closest to the point charge
3
negative and distributed non-uniformly over the entire surface of the sphere
4
zero
08
PYQ 2009
medium
physics ID: jee-adva
Under the influence of the coulomb field of charge , a charge is moving around it in an elliptical orbit. Find out the correct statement(s).
1
The angular momentum of the charge is constant
2
The linear momentum of the charge is constant
3
The angular velocity of the charge is constant
4
The linear speed of the charge is constant
09
PYQ 2012
medium
physics ID: jee-adva
A cubical region of side a has its centre at the origin. It encloses three fixed point charges, at at and at . Choose the correct option(s).
1
The net electric flux crossing the plane x = + a/2 is equal to the net electric flux crossing the plane x = - a/2 c
2
The net electric flux crossing the plane y = + a/2 is more than the net electric flux crossing the plane y = - a/2
3
The net electric flux crossing the entire region is
4
The net electric flux crossing the plane z = + a/2 is equal to the net electric flux crossing the plane x - + a/2
10
PYQ 2014
easy
physics ID: jee-adva
Let and be the respective electric fields at a distance from a point charge infinitely long wire with constant linear charge density , and an infinite plane with uniform surface charge density . If at a given distance , then
1
2
3
4
11
PYQ 2014
medium
physics ID: jee-adva
Charges Q, and are uniformly distributed in three dielectric solid spheres 1,2 and 3 of radii and respectively, as shown in figure. If magnitudes of the electric fields at point at a distance from the centre of spheres 1,2 and 3 are and respectively, then
1
2
3
4
12
PYQ 2015
medium
physics ID: jee-adva
The figures below depict two situations in which two infinitely long static line charges of constant positive line charge density are kept parallel to each other. In their resulting electric field, point charges and are kept in equilibrium between them. The point charges are confined to move in the direction only. If they are given a small displacement about their equilibrium positions, then the correct statements(s) is(are)
1
Both charges execute simple harmonic motion.
2
Both charges will continue moving in the direction of their displacement.
3
Charge +q executes simple harmonic motion while charge -q continues moving in the direction of its displacement.
4
Charge -q executes simple harmonic motion while charge +q continues moving in the direction of its displacement.
13
PYQ 2019
medium
physics ID: jee-adva
A charged shell of radius carries a total charge . Given as the flux of electric field through a closed cylindrical surface of height , radius and with its center same as that of the shell. Here, center of the cylinder is a point on the axis of the cylinder which is equidistant from its top and bottom surfaces. Which of the following option(s) is/are correct? [ is the permittivity of free space]
1
If and then
2
If and then
3
If and then
4
If and then
14
PYQ 2019
medium
physics ID: jee-adva
An electric dipole with dipole moment is held fixed at the origin O in the presence of an uniform electric field of magnitude E. If the potential is constant on a circle of radius R centered at the origin as shown in figure, then the correct statement(s) is/are: ( is permittivity of free space, R >> dipole size)
1
2
The magnitude of total electric field on any two points of the circle will be same
3
Total electric field at point A is
4
Total electric field at point B is
15
PYQ 2020
hard
physics ID: jee-adva
A uniform electric field, E=-400 YNC-1 is applied in a region. A charged particle of mass m carrying positive charge q is projected in this region with an initial speed of 2β10 Γ 106 msβ1. This particle is aimed to hit a target T, which is 5 m away from its entry point into the field schematically in the figure. Take = 1010 ckg-1.
Β
1
the particle will hit T if projected at an angle of 45ΒΊ from the horizontal
2
the particle will hit T if projected either at an angle of 30ΒΊ or 60ΒΊ from the horizontal
3
time taken by the particle to hit T could be ΞΌs as well as ΞΌs
4
time taken by the particle to hit T is ΞΌs
16
PYQ 2022
easy
physics ID: jee-adva
In the figure, the inner (shaded) region represents a sphere of radius , within which the electrostatic charge density varies with the radial distance from the center as , where is positive. In the spherical shell of outer radius , the electrostatic charge density varies as . Assume that dimensions are taken care of. All physical quantities are in their SI units.
Β
Which of the following statement(s) is(are) correct?
Β Which of the following statement(s) is(are) correct?
About Electric Charges And Fields - JEE-ADVANCED
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