TV series example of the word

The Big Bang Theory Season 5, Episode 7
(electrical crackling, popping)

The Big Bang Theory Season 3, Episode 2
Actually, ethyl alcohol inhibits electrical conduction in the nerve cells...

The Big Bang Theory Season 11, Episode 8
Tesla was a genius who invented our electrical grid.

The Big Bang Theory Season 5, Episode 16
And an electrical charge.

The Big Bang Theory Season 2, Episode 12
Yeah, no. A little electrical tape, some solder...