alleryAmpere's circuital law considers a surface that is:
AInfinite in extent
BA single point
COpen with a boundary
DClosed all round
Answer & Solution
Correct answer: C. Open with a boundary
1. The law relates a line integral to the current through a surface.
2. That surface must have an edge for the line to run along.
3. So it is an open surface with a boundary.
_Source: syllabus Physics Part I, Chapter 4, Moving Charges and Magnetism._
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