An proton moves from point I to point f, in the direction of a uniform electric

Question

An proton moves from point I to point f, in the direction of a uniform electric field. During this motion, (select all that apply.) the work done by the field is positive and the potential energy of the electron-field system decreases. the work done by the field is positive and the potential energy of the electron-field system does not change. the work done by the field is negative and the potential energy of the electron-field system decreases. the work done by the field is negative and the potential energy of the electron-field system increases. the work done by the field is positive and the potential energy of the electron-field system increases.

Explanation / Answer

Correct answer is (A) - work done by field is + ve and the potential energy of electron field system decreases .

Reason :-

For a +ve charge, if it is moved in the direction of the electric field, the Electric Field does +ve work

If a positive charge moves opposite to the field, the change in potential energy is positive. If it moves in the direction of the field Ue is negative.

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