It may have a shocking potential (7)
I believe the answer is:
voltage
'potential' is the definition.
(I have seen 'current potential' mean 'voltage' so perhaps 'potential' could also mean 'voltage')
'it may have a shocking' is the wordplay.
I cannot quite see how this works, but
'it' could be 'tag' (playground catching game) and 'tag' is found in the answer.
The remaining letters 'vole' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for voltage that I've seen before include "current potential" , "Measure of electrical potential" , "Power supply rating" .)