What to do when in power shower we hear? (5)
I believe the answer is:
reign
'what to do when in power' is the definition.
The definition suggests a singular noun which matches the answer.
'shower we hear?' is the wordplay.
'shower' becomes 'rain' (rainfall).
'we hear?' indicates a 'sounds like' (homophone) clue.
'rain' is a homophone of 'REIGN'.
Can you help me to learn more?
(Other definitions for reign that I've seen before include "Monarch's rule" , "Rule - dominate" , "Time on throne" , "Prevail" , "Monarch's time in the job" .)