Physics I / Surface Integrals
Practice question · Sort into groups

Sort: is this a line integral or a surface integral?

Groups: Line integral · Surface integral

Hints
  1. Count the dimensions of the region being integrated over.
  2. One parameter means a curve; two mean a surface.
Show the answer

Line integral: CFdr\int_C F \cdot dr, Work done by a force along a path, Circulation around a loop

Surface integral: ∬_S F dS\cdot dS, Flux through a membrane, Electric flux through a Gaussian surface

Why

Line integrals are over curves (1D); surface integrals are over surfaces (2D).

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