Current measures? See a PM struggling to accommodate Right (7)
I believe the answer is:
amperes
'current measures?' is the definition.
(I've seen this in another clue)
'see a pm struggling to accommodate right' is the wordplay.
'struggling' is an anagram indicator (the letters struggle or wriggle into a new form).
'to accommodate' means one lot of letters goes inside another.
'right' becomes 'r' (common abbreviation).
'see'+'a'+'pm'='seeapm'
'seeapm' anagrammed gives 'ampees'.
'ampees' going around 'r' is 'AMPERES'.
(Another definition for amperes that I've seen is " Units of electrical current".)