The electric potential at point `A` is `20 V` and at `B` is `-40 V`. Find the work done by an external and electrostatic force in moving an electron slowly from B to A.

The electric potential at. Point A is 20 V and B is – 20 V. The work done by an external force in moving electron slowly from B to A is

A charge Q is placed at the origin. The electric potential due to this charge at a given point in space is V . The work done by an external force in bringing another charge q from infinity up to the point is

Potential at a point A is 3 volt and at a point B is 7 V , an electron is moving towards A form B .

1 mu C charge is shifted from A to B, and it is found that work done by an external force is 40 mu J . In doing so against electrostatic forces, find potential difference V_A - V_B .

Figures (a) and (b) show the field lines of a positive and negative point charge respectively. (a) Give the signs of the potential difference V_(P)-V_(Q), V_(B)-V_(A) . (b) Give the sign of the potential energy difference of a small negative charge between the points Q and P, A and B. (c) Give the sign of the work done by the field in moving a small positive charge from Q to P. (d) Give the sign of the work done by the external agency in moving a small negative charge from B to A. (e) Does the kinetic energy of a small negative charge increase or decrease in going from B to A?

1 mu C charge is shifted from A to B and it is found that work done by external force is 80 mu J against electrostic forces, find V_(A)-V_(B)

Two points P and Q are maintained at the potentials of 10V and -4V, respectively. The work done in moving 100 electrons from P to Q is:

A charge is moved in an electric field of a fixed charge distribution from point A to another point B slowly. The work done by external agent in doing so is 100 J . What is the change in potential energy of the charge as it moves from A to B ? What is the work done by the electric field of the charge distribution as the charge moves from A to B ?

A charge is moved in an electric field of a fixed charge distribution from point A to another point B slowly. The work done by external agent in doing so is 100J . What is the change in potential energy of the charge as it moves from A to B ? What is the work done by the electric field of the charge distribution as the charge moves from A to B ?

A particle is moving in a conservative force field from point A to point B.U_(A) and U_(B) are the potential energies of the particle at point A and B and W_(C) is the work done by conservative forces in the process of taking the particle from A and B, which of the following is true?