An equipotential line is _____________ to the velocity vector at every point?
Correct answer: A. Normal
- A. Normal
- B. Parallel
- C. Tangential
- D. None of these
Explanation
In potential flow, velocity is the gradient of the potential, so it points in the direction of greatest potential change and is normal to an equipotential line. Thus, the velocity has no component along the equipotential line.
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