Is Electrostatic Force Conservative
Trending Questions
Q.
The following figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge-to-mass ratio?
Q. A neutron, proton, electron and particle enter a region of uniform
magnetic field with equal velocities. The magnetic field is perpendicular
and directed into the paper. The tracks of particles are labeled in figure.
The electron follows track
magnetic field with equal velocities. The magnetic field is perpendicular
and directed into the paper. The tracks of particles are labeled in figure.
The electron follows track
- A
- B
- C
- D
Q. 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
- Is least along the path AB
- Is least along the path AD
- Is zero along all the paths AB, AC, AD and AE
- Is least along AE
Q. When the distance between the charged particles is halved, the force between them becomes
- One-fourth
- Half
- Double
- Four times
Q. 17.Positive and negative point charges of equal magnitude are kept at (0, 0, a/2)and(0, 0, -a/2)respectively. The work done by the electric field when another positive point charge is moved from (–a, 0, 0) to (0, a, 0) is
Q. 41 Suppose that earth has a surface charge density 1electron/meter square . calculate earth potential and electric feild just outside earth surface .radius of Earth 6400 km
Q. 36. Three infinitely long line charges having linear charge density A, 2A, 3Aare placed along x axis y axis and Z Axis respectively the work done by the electric field in moving a unit positive charge from (2, 2, 2) to (2, 2, 0) will be----
Q. nt2 equal charges , 2.0x10 raise to power-7C each r held fixed at a sepration of 20cm and a third charge of equal magnitude is placed midway bw two charges .It is now moved to a point 20 cm from both the charges. how much work is done by the electric field during this process?n
Q. 48.A 500 microcoulomb charge at a centre of a square of side 10 cm. Find the work done in moving a charge of 10 microcoulomb between two diagonally opposite points on the square.
Q.
Work done in bringing the positive charge from point A to B where A and B are at dimetrically opposite ends of semi-circle.
A) Proportional to charge on the shell
B) Proportional to the charge brought from. A to B
C) Proportional to radius of shell
D) Independent of all three
Q. If in Bohr's atomic model, it is assumed that force between electron and proton varies inversely as r4, then the kinetic energy of the electron will be proportional to nγ, where γ is
Q. A particle of charge Q and mass m is initially at rest at origin. Electric field is given by Ej while magnetic field is Bk. Find speed of particle when the coordinator of particle are (2π mv/qB, 0, 0).
Q. A particle of mass m moves in a circular orbit in a central potential field U(r)=12kr2. If Bohr's quantization conditions are applied, radii of possible orbitls and energy levels vary with quantum number n as :
- rn∝n2, En∝1n2
- rn∝√n, En∝1n
- rn∝n, En∝n
- rn∝√n, En∝n
Q. A point charge is taken from a point A to point B in an electric field produced by stationary charges. Does the work done by the electric field depend on the path of the charge?
- Yes
- No
Q. A point charge q is held at the centre of a circle of radius r. B, C are two points on the circumference of the circle and A is a point outside the circle. If WAB represents work done by electric field in taking a charge q0 from A to B and WAC represents the workdone from A to C, then (1) WAB > WAC (2) WAB < WAC (3) WAB = WAC ≠ 0 (4) WAB = WAC = 0
Q. if initial charge on all capacitors were zero, work done by the bater yin the circui
Q. A charge q, mass m is lying in a cylindrical region of magnetic field at point P. If magnetic field is given by B_0 and P is at a dis†an ce R from the center of region , find speed of charge if the magnetic field is suddenly switched off. Magnetic field is in negative z-axis.
Q. In space a uniform electric field exists in x− direction. If the work done by external agent in moving a charge of 0.2 C through a distance of 2 m , slowly along the line making an angle of 60∘ with x− direction is 4 J, then the magnitude of the electric field E is-
- √3 NC−1
- 4 NC−1
- 5 NC−1
- 20 NC−1
Q.
What limits the energy that can be imparted to a charge particle in a cyclotron?
variation in mass with velocity
the gap between the dees
Potential difference between dees
Charge
Q. A disc having charge Q , radius R is rotating with a constant angular velocity Omega about its own axis . find magnetic field at a distance x from the centre on its axis
Q. Two fixed charges A and B of 5microC each are separated by a distance of 6m. C is the mid point of line joining A and B. A charge Q of -5micro C is short perpendicular to the line joining A and B through C with kinetic energy of 0.06J. The charge Q comes to rest at a point D. The distance CD is Options are:- a)3m b)3m c)33m d)4m
Q. Suppose the potential energy between electron and proton at a distance r is given by ke23r . Then using Bohr's theory radius of 1st bohr orbit is given by
- 3h22mke2
- 6h2mke2
- 3h24mke2
- 3h2mke2
Q. Positive and negative point charges of equal magnitude are kept at
(0, 0, a/2) and (0, 0, -a/2), respectively. The work done by the electric field
when another positive charge in moved from (-a, 0, 0) to (0, a, 0) is
A. Positive
B. Negative
C. Zero
D. depends on the path connecting the initial and final
position.
Q. The external work required to reduce thedistance between two charge q1 4 μ C and , , q2 20 uC from 2 m to 1 m will be
Q. 1. A disc having charge Q , radius R is rotating with a constant angular velocity Omega about its own axis . find magnetic field at a distance x from the centre on its axis
Q.
A spherical conductor of radius 12 cm has a charge of 1.6 × 10−7C distributed uniformly on its surface. What is the electric field
(a) Inside the sphere
(b) Just outside the sphere
(c) At a point 18 cm from the centre of the sphere?