Current - energy + time, figuratively and in symbols (10)

I believe the answer is:

ampersands

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'symbols' is the definition.
(ampersand is a kind of symbol)

'current energy time figuratively and in' is the wordplay.
'current' becomes 'amp' (electricity).
'energy' becomes 'e' (physics symbol as in E=mcs).
'time figuratively' becomes 'rss' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'rss' going around 'and' is 'rsands'.
'amp'+'e'+'rsands'='AMPERSANDS'

Can you help me to learn more?

(Another definition for ampersands that I've seen is " '&' symbols".)

I've seen this clue in The Guardian.

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