# 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

- 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^{−7}C
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?

**Q.**A magnetic field can be produced by

(a) a moving charge

(b) a changing electric field

(c) Neither of them

(d) Both of them

**Q.**A charge 2×10^(-3) and mass 1 gm is projected from level ground woth a velocity 10 m/sec at an angle 37^° with horizontal along x direction.The electric potential in space V =3x+4y.What is the speed of charge when y coordinate is maximum

**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.**The electric potential between a proton and an electron is given by V=V0lnrr0, where r0 is a constant. Assuming Bohr's model to be applicable, Find the relation between rn and n. where, n being the principal quantum number.

- rn ∝ n
- rn ∝ 1n
- rn ∝ n2
- rn ∝ 1n2