Connected to the internet, tense with excitement (5)
I believe the answer is:
wired
This clue is a double definition.
'connected to the internet' is the first definition.
'tense with excitement' is the second definition.
(I've seen this in another clue)
(Other definitions for wired that I've seen before include "set up for broadcast?" , "Connected to an electricity supply" , "Sent a telegram" , "Equipped for electricity" , "Equipped for electrical connection" .)