Unit of electrical charge (7)
(Other definitions for faraday that I've seen before include "Scientist" , "English physicist and chemist, d. 1867" , "Man of note" , "unit" , "Michael -, nineteenth century English physicist and chemist" .)
'unit of electrical charge' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for coulomb that I've seen before include "Unit of electrical charge" , "physicist" , "SI unit of electric charge" .)