Question

work how done against electric field?​

Answer 1

Answer:

However, any movement of a positive charge into a region of higher voltage requires external work to be done againstthe field of the electric force, which is equal to the work that the electric fieldwould do in moving that positive charge the same distance in the opposite direction.

Answer 2

⭐The force on a charge qq in a uniform electric field, EE, is F=qEF=qE and is constant. The work required to move the charge a distance dd in the field is

W=qEdW=qEd

If the charge is positive, and the charge moves in the direction of the electric field (+ to – by convention) solely under the influence of the field, the field does positive work on the charge. It accelerates the charge gaining kinetic energy equal to the work done by the field.

If an external force is applied to the charge against the electric field (- to +) and the force is equal to the force of the electric field so that it moves at constant velocity, the external force does positive work on the charge, but the electric field does an equal amount of negative work, so the net work done on the charge is zero. The end result is the work done by the external force on the charge is stored as electrical potential energy of the charge.

Hope this helps.