Henry goes in to scrub choir here (7)
I believe the answer is:
chancel
'choir here' is the definition.
(area in a church for a choir)
'henry goes in to scrub' is the wordplay.
'henry' becomes 'H' (symbol for the unit of electrical inductance).
'goes in' is an insertion indicator.
'to scrub' becomes 'cancel' (I've seen this before).
'h' placed into 'cancel' is 'CHANCEL'.
(Other definitions for chancel that I've seen before include "Clergy's area of the church" , "Area around the altar of a church" , "space for choir" , "church, partly" , "Place of altar" .)