unit of electrical current (6)
I believe the answer is:
ampere
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unit of electrical current</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ampere that I've seen before include "Unit of currency" , "Current measure" , "Basic SI unit of electric current" , "Current analyst" , "Unit of electrical current" .)