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AP Physics 2
10.5 Electric Potential
10.4 Electric Potential Energy
IntermediateMCQMathematicalConceptual20.2k
Four paths of a positively charged particle moving through equipotential lines.
Four paths of a positively charged particle moving through equipotential lines.
Four paths (1, 2, 3, and 4) represent different trajectories along which a particle with positive charge \(+q\) moves in a region containing parallel equipotential surfaces at \(20\text{ V}\), \(40\text{ V}\), and \(60\text{ V}\).

  • Path 1 goes directly from the \(20\text{ V}\) surface to the \(60\text{ V}\) surface.
  • Path 2 follows a curved trajectory from the \(60\text{ V}\) surface to the \(20\text{ V}\) surface.
  • Path 3 follows a winding trajectory from the \(60\text{ V}\) surface to the \(40\text{ V}\) surface.
  • Path 4 completes a closed loop that starts and ends on the \(40\text{ V}\) surface.

Which of the following correctly ranks the work \(W\) done by the electric field on the particle along each path from greatest to least?

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