Makes light work of passing course (7)

I believe the answer is:

current

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'course' is the definition.
(I know that current is a type of course)

I don't understand the remainder of the clue.

(Other definitions for current that I've seen before include "Up-to-date" , "Flow of air or water" , "moving mass" , "Flow of electricity" , "Contemporary" .)

I've seen this clue in The Globe and Mail.

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