The figure below shows points on several equipotential surfaces, with V A > V D

Question

The figure below shows points on several equipotential surfaces, with VA > VD. A positive charge starts at point A and ends at point D. If the positive charge starts and ends AT REST, which of the following statements applies? CONSIDER ONLY THE POSITIVE CHARGE AS THE SYSTEM.

Main Menu Contents Grades Syllabus Timer Notes à Evaluate Course Contents » » Homework 04 »Equipotential 1 Feedback-Print Info The figure below shows points on several equipotential surfaces, with VA > VD. A positive charge starts at point A and ends at point D. If the positive charge starts and ends AT REST, which of the following statements applies? CONSIDER ONLY THE POSITIVE CHARGE AS THE SYSTEM ·F E The total work done on the positive charge is Submit Answer Tries 0/5 The work done on the positive charge by the electric force must be Submit Answer Tries 0/5 :The work done on the positive charge by an external force must be Submit Answer Tries 0/5 Post Discussion Send Feedback

Explanation / Answer

A)

The total work done on the positive charge is negative. Because it is moving from higher potential energy region to lower potential energy

W = q(VD - VA)

Since VD < VA

W is negative

B)

We = W is negative,

C)

Wex = 0 since there are no external forces

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