Some resistance (4)
I believe the answer is:
ohms
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">some resistance</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ohms that I've seen before include "degrees of resistance" , "Measure of resistance" , "Units of electrical resistance" , "Frank marking" , "working for the monarchy?" .)