French physicist’s mother backing his father? (6)
I believe the answer is:
ampere
'french physicist's' is the definition.
(I've seen this in another clue)
'mother backing his father?' is the wordplay.
'mother' becomes 'ma' (ma can mean mother).
'backing' says the letters should be written backwards.
'his father?' becomes 'pere' (I can't explain this - if you can you should believe this answer much more).
'ma' written backwards gives 'am'.
'am'+'pere'='AMPERE'
Can you help me to learn more?
(Other definitions for ampere that I've seen before include "Current measure" , "Solenoid inventor" , "Unit of electrical current" , "Unit measured by 17 across" , "Current analyst" .)