- #1

- 174

- 2

∮ r x dr

I am puzzled - shouldn't this be ∮ r x dl where r is the radius of the loop and dl is the small change along the loop?

(I think dr would be in the same direction as r, so no cross product for r and dr?)

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- Thread starter ognik
- Start date

- #1

- 174

- 2

∮ r x dr

I am puzzled - shouldn't this be ∮ r x dl where r is the radius of the loop and dl is the small change along the loop?

(I think dr would be in the same direction as r, so no cross product for r and dr?)

- #2

mfb

Mentor

- 35,924

- 12,756

That looks like a notation error. r x dl looks better.

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